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Finding the Fourth Proportional to 5,687.47, 7,849.17 and 3,170.40

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Solution

The fourth proportional to 5,687.47, 7,849.17 and 3,170.40 is: 4,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.47 : 7,849.17 = 3,170.40 : x
  2. Step 2: Convert to fraction form
    5,687.47/7,849.17 = 3,170.40/x
  3. Step 3: Cross multiply
    5,687.47x = 7,849.17 × 3,170.40
  4. Step 4: Simplify right side
    5,687.47x = 24,884,953.47
  5. Step 5: Solve for x
    x = 24,884,953.47/5,687.47
  6. Step 6: Final answer
    x = 4,375.40

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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.