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Finding the Fourth Proportional to 5,909.99, 8,159.90 and 3,672.87

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Solution

The fourth proportional to 5,909.99, 8,159.90 and 3,672.87 is: 5,071.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,909.99 : 8,159.90 = 3,672.87 : x
  2. Step 2: Convert to fraction form
    5,909.99/8,159.90 = 3,672.87/x
  3. Step 3: Cross multiply
    5,909.99x = 8,159.90 × 3,672.87
  4. Step 4: Simplify right side
    5,909.99x = 29,970,251.72
  5. Step 5: Solve for x
    x = 29,970,251.72/5,909.99
  6. Step 6: Final answer
    x = 5,071.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.