Home / 2,639.28-3,951.36-1,772.04

Finding the Fourth Proportional to 2,639.28, 3,951.36 and 1,772.04

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Solution

The fourth proportional to 2,639.28, 3,951.36 and 1,772.04 is: 2,652.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.28 : 3,951.36 = 1,772.04 : x
  2. Step 2: Convert to fraction form
    2,639.28/3,951.36 = 1,772.04/x
  3. Step 3: Cross multiply
    2,639.28x = 3,951.36 × 1,772.04
  4. Step 4: Simplify right side
    2,639.28x = 7,001,967.97
  5. Step 5: Solve for x
    x = 7,001,967.97/2,639.28
  6. Step 6: Final answer
    x = 2,652.98

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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.