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Finding the Fourth Proportional to 7,287.91, 10,057.20 and 4,057.70

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Solution

The fourth proportional to 7,287.91, 10,057.20 and 4,057.70 is: 5,599.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.91 : 10,057.20 = 4,057.70 : x
  2. Step 2: Convert to fraction form
    7,287.91/10,057.20 = 4,057.70/x
  3. Step 3: Cross multiply
    7,287.91x = 10,057.20 × 4,057.70
  4. Step 4: Simplify right side
    7,287.91x = 40,809,034.94
  5. Step 5: Solve for x
    x = 40,809,034.94/7,287.91
  6. Step 6: Final answer
    x = 5,599.55

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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.