Home / 5,380.32-7,425.46-3,142.74

Finding the Fourth Proportional to 5,380.32, 7,425.46 and 3,142.74

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Solution

The fourth proportional to 5,380.32, 7,425.46 and 3,142.74 is: 4,337.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.32 : 7,425.46 = 3,142.74 : x
  2. Step 2: Convert to fraction form
    5,380.32/7,425.46 = 3,142.74/x
  3. Step 3: Cross multiply
    5,380.32x = 7,425.46 × 3,142.74
  4. Step 4: Simplify right side
    5,380.32x = 23,336,290.16
  5. Step 5: Solve for x
    x = 23,336,290.16/5,380.32
  6. Step 6: Final answer
    x = 4,337.34

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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.