Home / 1,451.05-2,002.46-787.93

Finding the Fourth Proportional to 1,451.05, 2,002.46 and 787.93

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Solution

The fourth proportional to 1,451.05, 2,002.46 and 787.93 is: 1,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.05 : 2,002.46 = 787.93 : x
  2. Step 2: Convert to fraction form
    1,451.05/2,002.46 = 787.93/x
  3. Step 3: Cross multiply
    1,451.05x = 2,002.46 × 787.93
  4. Step 4: Simplify right side
    1,451.05x = 1,577,789.36
  5. Step 5: Solve for x
    x = 1,577,789.36/1,451.05
  6. Step 6: Final answer
    x = 1,087.35

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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.