Home / 5,123.20-7,069.92-3,133.61

Finding the Fourth Proportional to 5,123.20, 7,069.92 and 3,133.61

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Solution

The fourth proportional to 5,123.20, 7,069.92 and 3,133.61 is: 4,324.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.20 : 7,069.92 = 3,133.61 : x
  2. Step 2: Convert to fraction form
    5,123.20/7,069.92 = 3,133.61/x
  3. Step 3: Cross multiply
    5,123.20x = 7,069.92 × 3,133.61
  4. Step 4: Simplify right side
    5,123.20x = 22,154,372.01
  5. Step 5: Solve for x
    x = 22,154,372.01/5,123.20
  6. Step 6: Final answer
    x = 4,324.32

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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.