Home / 8,905.57-12,291.38-6,360.23

Finding the Fourth Proportional to 8,905.57, 12,291.38 and 6,360.23

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Solution

The fourth proportional to 8,905.57, 12,291.38 and 6,360.23 is: 8,778.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.57 : 12,291.38 = 6,360.23 : x
  2. Step 2: Convert to fraction form
    8,905.57/12,291.38 = 6,360.23/x
  3. Step 3: Cross multiply
    8,905.57x = 12,291.38 × 6,360.23
  4. Step 4: Simplify right side
    8,905.57x = 78,176,050.45
  5. Step 5: Solve for x
    x = 78,176,050.45/8,905.57
  6. Step 6: Final answer
    x = 8,778.33

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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.