Home / 8,422.38-11,622.96-4,885.65

Finding the Fourth Proportional to 8,422.38, 11,622.96 and 4,885.65

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Solution

The fourth proportional to 8,422.38, 11,622.96 and 4,885.65 is: 6,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.38 : 11,622.96 = 4,885.65 : x
  2. Step 2: Convert to fraction form
    8,422.38/11,622.96 = 4,885.65/x
  3. Step 3: Cross multiply
    8,422.38x = 11,622.96 × 4,885.65
  4. Step 4: Simplify right side
    8,422.38x = 56,785,714.52
  5. Step 5: Solve for x
    x = 56,785,714.52/8,422.38
  6. Step 6: Final answer
    x = 6,742.24

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Find fourth proportional to 4,211.19, 5,811.48 and 2,442.83
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.