Home / 5,123.52-7,686.84-2,660.10

Finding the Fourth Proportional to 5,123.52, 7,686.84 and 2,660.10

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Solution

The fourth proportional to 5,123.52, 7,686.84 and 2,660.10 is: 3,990.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.52 : 7,686.84 = 2,660.10 : x
  2. Step 2: Convert to fraction form
    5,123.52/7,686.84 = 2,660.10/x
  3. Step 3: Cross multiply
    5,123.52x = 7,686.84 × 2,660.10
  4. Step 4: Simplify right side
    5,123.52x = 20,447,763.08
  5. Step 5: Solve for x
    x = 20,447,763.08/5,123.52
  6. Step 6: Final answer
    x = 3,990.96

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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.