Home / 5,380.71-7,425.99-3,143.31

Finding the Fourth Proportional to 5,380.71, 7,425.99 and 3,143.31

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Solution

The fourth proportional to 5,380.71, 7,425.99 and 3,143.31 is: 4,338.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.71 : 7,425.99 = 3,143.31 : x
  2. Step 2: Convert to fraction form
    5,380.71/7,425.99 = 3,143.31/x
  3. Step 3: Cross multiply
    5,380.71x = 7,425.99 × 3,143.31
  4. Step 4: Simplify right side
    5,380.71x = 23,342,188.63
  5. Step 5: Solve for x
    x = 23,342,188.63/5,380.71
  6. Step 6: Final answer
    x = 4,338.12

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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.