Home / 3,915.91-5,399.42-2,657.77

Finding the Fourth Proportional to 3,915.91, 5,399.42 and 2,657.77

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Solution

The fourth proportional to 3,915.91, 5,399.42 and 2,657.77 is: 3,664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.91 : 5,399.42 = 2,657.77 : x
  2. Step 2: Convert to fraction form
    3,915.91/5,399.42 = 2,657.77/x
  3. Step 3: Cross multiply
    3,915.91x = 5,399.42 × 2,657.77
  4. Step 4: Simplify right side
    3,915.91x = 14,350,446.36
  5. Step 5: Solve for x
    x = 14,350,446.36/3,915.91
  6. Step 6: Final answer
    x = 3,664.65

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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.