Home / 3,432.20-5,148.45-1,123.70

Finding the Fourth Proportional to 3,432.20, 5,148.45 and 1,123.70

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Solution

The fourth proportional to 3,432.20, 5,148.45 and 1,123.70 is: 1,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.20 : 5,148.45 = 1,123.70 : x
  2. Step 2: Convert to fraction form
    3,432.20/5,148.45 = 1,123.70/x
  3. Step 3: Cross multiply
    3,432.20x = 5,148.45 × 1,123.70
  4. Step 4: Simplify right side
    3,432.20x = 5,785,287.52
  5. Step 5: Solve for x
    x = 5,785,287.52/3,432.20
  6. Step 6: Final answer
    x = 1,685.59

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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.