Home / 5,280.42-7,280.10-3,287.43

Finding the Fourth Proportional to 5,280.42, 7,280.10 and 3,287.43

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Solution

The fourth proportional to 5,280.42, 7,280.10 and 3,287.43 is: 4,532.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.42 : 7,280.10 = 3,287.43 : x
  2. Step 2: Convert to fraction form
    5,280.42/7,280.10 = 3,287.43/x
  3. Step 3: Cross multiply
    5,280.42x = 7,280.10 × 3,287.43
  4. Step 4: Simplify right side
    5,280.42x = 23,932,819.14
  5. Step 5: Solve for x
    x = 23,932,819.14/5,280.42
  6. Step 6: Final answer
    x = 4,532.37

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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.