Home / 5,172.55-7,138.28-2,934.52

Finding the Fourth Proportional to 5,172.55, 7,138.28 and 2,934.52

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Solution

The fourth proportional to 5,172.55, 7,138.28 and 2,934.52 is: 4,049.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.55 : 7,138.28 = 2,934.52 : x
  2. Step 2: Convert to fraction form
    5,172.55/7,138.28 = 2,934.52/x
  3. Step 3: Cross multiply
    5,172.55x = 7,138.28 × 2,934.52
  4. Step 4: Simplify right side
    5,172.55x = 20,947,398.41
  5. Step 5: Solve for x
    x = 20,947,398.41/5,172.55
  6. Step 6: Final answer
    x = 4,049.73

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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.