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Finding the Fourth Proportional to 8,371.35, 12,557.03 and 7,817.81

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Solution

The fourth proportional to 8,371.35, 12,557.03 and 7,817.81 is: 11,726.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.35 : 12,557.03 = 7,817.81 : x
  2. Step 2: Convert to fraction form
    8,371.35/12,557.03 = 7,817.81/x
  3. Step 3: Cross multiply
    8,371.35x = 12,557.03 × 7,817.81
  4. Step 4: Simplify right side
    8,371.35x = 98,168,372.83
  5. Step 5: Solve for x
    x = 98,168,372.83/8,371.35
  6. Step 6: Final answer
    x = 11,726.71

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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.