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Finding the Fourth Proportional to 8,666.91, 13,002.80 and 3,476.43

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Solution

The fourth proportional to 8,666.91, 13,002.80 and 3,476.43 is: 5,215.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.91 : 13,002.80 = 3,476.43 : x
  2. Step 2: Convert to fraction form
    8,666.91/13,002.80 = 3,476.43/x
  3. Step 3: Cross multiply
    8,666.91x = 13,002.80 × 3,476.43
  4. Step 4: Simplify right side
    8,666.91x = 45,203,306.62
  5. Step 5: Solve for x
    x = 45,203,306.62/8,666.91
  6. Step 6: Final answer
    x = 5,215.62

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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.