Home / 8,422.14-12,633.21-4,521.18

Finding the Fourth Proportional to 8,422.14, 12,633.21 and 4,521.18

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Solution

The fourth proportional to 8,422.14, 12,633.21 and 4,521.18 is: 6,781.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.14 : 12,633.21 = 4,521.18 : x
  2. Step 2: Convert to fraction form
    8,422.14/12,633.21 = 4,521.18/x
  3. Step 3: Cross multiply
    8,422.14x = 12,633.21 × 4,521.18
  4. Step 4: Simplify right side
    8,422.14x = 57,117,016.39
  5. Step 5: Solve for x
    x = 57,117,016.39/8,422.14
  6. Step 6: Final answer
    x = 6,781.77

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.