Home / 8,715.69-13,066.19-3,781.61

Finding the Fourth Proportional to 8,715.69, 13,066.19 and 3,781.61

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Solution

The fourth proportional to 8,715.69, 13,066.19 and 3,781.61 is: 5,669.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.69 : 13,066.19 = 3,781.61 : x
  2. Step 2: Convert to fraction form
    8,715.69/13,066.19 = 3,781.61/x
  3. Step 3: Cross multiply
    8,715.69x = 13,066.19 × 3,781.61
  4. Step 4: Simplify right side
    8,715.69x = 49,411,234.77
  5. Step 5: Solve for x
    x = 49,411,234.77/8,715.69
  6. Step 6: Final answer
    x = 5,669.23

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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.