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Finding the Fourth Proportional to 7,155.17, 9,874.09 and 4,011.38

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Solution

The fourth proportional to 7,155.17, 9,874.09 and 4,011.38 is: 5,535.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.17 : 9,874.09 = 4,011.38 : x
  2. Step 2: Convert to fraction form
    7,155.17/9,874.09 = 4,011.38/x
  3. Step 3: Cross multiply
    7,155.17x = 9,874.09 × 4,011.38
  4. Step 4: Simplify right side
    7,155.17x = 39,608,727.14
  5. Step 5: Solve for x
    x = 39,608,727.14/7,155.17
  6. Step 6: Final answer
    x = 5,535.68

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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.