Home / 5,125.19-7,687.78-3,956.90

Finding the Fourth Proportional to 5,125.19, 7,687.78 and 3,956.90

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Solution

The fourth proportional to 5,125.19, 7,687.78 and 3,956.90 is: 5,935.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.19 : 7,687.78 = 3,956.90 : x
  2. Step 2: Convert to fraction form
    5,125.19/7,687.78 = 3,956.90/x
  3. Step 3: Cross multiply
    5,125.19x = 7,687.78 × 3,956.90
  4. Step 4: Simplify right side
    5,125.19x = 30,419,728.35
  5. Step 5: Solve for x
    x = 30,419,728.35/5,125.19
  6. Step 6: Final answer
    x = 5,935.34

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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.