Home / 1,451.03-2,002.40-787.88

Finding the Fourth Proportional to 1,451.03, 2,002.40 and 787.88

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Solution

The fourth proportional to 1,451.03, 2,002.40 and 787.88 is: 1,087.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.03 : 2,002.40 = 787.88 : x
  2. Step 2: Convert to fraction form
    1,451.03/2,002.40 = 787.88/x
  3. Step 3: Cross multiply
    1,451.03x = 2,002.40 × 787.88
  4. Step 4: Simplify right side
    1,451.03x = 1,577,642.87
  5. Step 5: Solve for x
    x = 1,577,642.87/1,451.03
  6. Step 6: Final answer
    x = 1,087.26

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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.