Home / 8,715.76-13,066.29-3,781.69

Finding the Fourth Proportional to 8,715.76, 13,066.29 and 3,781.69

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Solution

The fourth proportional to 8,715.76, 13,066.29 and 3,781.69 is: 5,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.76 : 13,066.29 = 3,781.69 : x
  2. Step 2: Convert to fraction form
    8,715.76/13,066.29 = 3,781.69/x
  3. Step 3: Cross multiply
    8,715.76x = 13,066.29 × 3,781.69
  4. Step 4: Simplify right side
    8,715.76x = 49,412,658.23
  5. Step 5: Solve for x
    x = 49,412,658.23/8,715.76
  6. Step 6: Final answer
    x = 5,669.35

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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.