Home / 5,540.52-7,640.18-3,863.80

Finding the Fourth Proportional to 5,540.52, 7,640.18 and 3,863.80

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Solution

The fourth proportional to 5,540.52, 7,640.18 and 3,863.80 is: 5,328.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.52 : 7,640.18 = 3,863.80 : x
  2. Step 2: Convert to fraction form
    5,540.52/7,640.18 = 3,863.80/x
  3. Step 3: Cross multiply
    5,540.52x = 7,640.18 × 3,863.80
  4. Step 4: Simplify right side
    5,540.52x = 29,520,127.48
  5. Step 5: Solve for x
    x = 29,520,127.48/5,540.52
  6. Step 6: Final answer
    x = 5,328.04

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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.