Home / 5,280.31-7,287.09-3,042.55

Finding the Fourth Proportional to 5,280.31, 7,287.09 and 3,042.55

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Solution

The fourth proportional to 5,280.31, 7,287.09 and 3,042.55 is: 4,198.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.31 : 7,287.09 = 3,042.55 : x
  2. Step 2: Convert to fraction form
    5,280.31/7,287.09 = 3,042.55/x
  3. Step 3: Cross multiply
    5,280.31x = 7,287.09 × 3,042.55
  4. Step 4: Simplify right side
    5,280.31x = 22,171,335.68
  5. Step 5: Solve for x
    x = 22,171,335.68/5,280.31
  6. Step 6: Final answer
    x = 4,198.87

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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.