Home / 1,451.07-2,002.44-787.92

Finding the Fourth Proportional to 1,451.07, 2,002.44 and 787.92

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Solution

The fourth proportional to 1,451.07, 2,002.44 and 787.92 is: 1,087.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.07 : 2,002.44 = 787.92 : x
  2. Step 2: Convert to fraction form
    1,451.07/2,002.44 = 787.92/x
  3. Step 3: Cross multiply
    1,451.07x = 2,002.44 × 787.92
  4. Step 4: Simplify right side
    1,451.07x = 1,577,762.52
  5. Step 5: Solve for x
    x = 1,577,762.52/1,451.07
  6. Step 6: Final answer
    x = 1,087.31

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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.