Home / 5,125.10-7,687.65-3,956.81

Finding the Fourth Proportional to 5,125.10, 7,687.65 and 3,956.81

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Solution

The fourth proportional to 5,125.10, 7,687.65 and 3,956.81 is: 5,935.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.10 : 7,687.65 = 3,956.81 : x
  2. Step 2: Convert to fraction form
    5,125.10/7,687.65 = 3,956.81/x
  3. Step 3: Cross multiply
    5,125.10x = 7,687.65 × 3,956.81
  4. Step 4: Simplify right side
    5,125.10x = 30,418,531.96
  5. Step 5: Solve for x
    x = 30,418,531.96/5,125.10
  6. Step 6: Final answer
    x = 5,935.21

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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.