Home / 5,280.12-7,912.17-3,957.48

Finding the Fourth Proportional to 5,280.12, 7,912.17 and 3,957.48

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Solution

The fourth proportional to 5,280.12, 7,912.17 and 3,957.48 is: 5,930.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.12 : 7,912.17 = 3,957.48 : x
  2. Step 2: Convert to fraction form
    5,280.12/7,912.17 = 3,957.48/x
  3. Step 3: Cross multiply
    5,280.12x = 7,912.17 × 3,957.48
  4. Step 4: Simplify right side
    5,280.12x = 31,312,254.53
  5. Step 5: Solve for x
    x = 31,312,254.53/5,280.12
  6. Step 6: Final answer
    x = 5,930.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.