Home / 5,280.89-7,282.64-3,939.46

Finding the Fourth Proportional to 5,280.89, 7,282.64 and 3,939.46

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Solution

The fourth proportional to 5,280.89, 7,282.64 and 3,939.46 is: 5,432.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.89 : 7,282.64 = 3,939.46 : x
  2. Step 2: Convert to fraction form
    5,280.89/7,282.64 = 3,939.46/x
  3. Step 3: Cross multiply
    5,280.89x = 7,282.64 × 3,939.46
  4. Step 4: Simplify right side
    5,280.89x = 28,689,668.97
  5. Step 5: Solve for x
    x = 28,689,668.97/5,280.89
  6. Step 6: Final answer
    x = 5,432.73

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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.