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Finding the Fourth Proportional to 7,070.42, 10,608.17 and 2,687.87

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Solution

The fourth proportional to 7,070.42, 10,608.17 and 2,687.87 is: 4,032.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,070.42 : 10,608.17 = 2,687.87 : x
  2. Step 2: Convert to fraction form
    7,070.42/10,608.17 = 2,687.87/x
  3. Step 3: Cross multiply
    7,070.42x = 10,608.17 × 2,687.87
  4. Step 4: Simplify right side
    7,070.42x = 28,513,315.42
  5. Step 5: Solve for x
    x = 28,513,315.42/7,070.42
  6. Step 6: Final answer
    x = 4,032.76

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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.