Home / 3,132.10-4,321.88-1,787.90

Finding the Fourth Proportional to 3,132.10, 4,321.88 and 1,787.90

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Solution

The fourth proportional to 3,132.10, 4,321.88 and 1,787.90 is: 2,467.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.10 : 4,321.88 = 1,787.90 : x
  2. Step 2: Convert to fraction form
    3,132.10/4,321.88 = 1,787.90/x
  3. Step 3: Cross multiply
    3,132.10x = 4,321.88 × 1,787.90
  4. Step 4: Simplify right side
    3,132.10x = 7,727,089.25
  5. Step 5: Solve for x
    x = 7,727,089.25/3,132.10
  6. Step 6: Final answer
    x = 2,467.06

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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.