Home / 8,505.20-11,737.42-5,147.40

Finding the Fourth Proportional to 8,505.20, 11,737.42 and 5,147.40

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Solution

The fourth proportional to 8,505.20, 11,737.42 and 5,147.40 is: 7,103.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.20 : 11,737.42 = 5,147.40 : x
  2. Step 2: Convert to fraction form
    8,505.20/11,737.42 = 5,147.40/x
  3. Step 3: Cross multiply
    8,505.20x = 11,737.42 × 5,147.40
  4. Step 4: Simplify right side
    8,505.20x = 60,417,195.71
  5. Step 5: Solve for x
    x = 60,417,195.71/8,505.20
  6. Step 6: Final answer
    x = 7,103.56

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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.