Home / 5,280.38-7,285.15-3,042.20

Finding the Fourth Proportional to 5,280.38, 7,285.15 and 3,042.20

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Solution

The fourth proportional to 5,280.38, 7,285.15 and 3,042.20 is: 4,197.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.38 : 7,285.15 = 3,042.20 : x
  2. Step 2: Convert to fraction form
    5,280.38/7,285.15 = 3,042.20/x
  3. Step 3: Cross multiply
    5,280.38x = 7,285.15 × 3,042.20
  4. Step 4: Simplify right side
    5,280.38x = 22,162,868.12
  5. Step 5: Solve for x
    x = 22,162,868.12/5,280.38
  6. Step 6: Final answer
    x = 4,197.21

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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.