Home / 1,558.38-2,335.92-787.26

Finding the Fourth Proportional to 1,558.38, 2,335.92 and 787.26

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Solution

The fourth proportional to 1,558.38, 2,335.92 and 787.26 is: 1,180.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.38 : 2,335.92 = 787.26 : x
  2. Step 2: Convert to fraction form
    1,558.38/2,335.92 = 787.26/x
  3. Step 3: Cross multiply
    1,558.38x = 2,335.92 × 787.26
  4. Step 4: Simplify right side
    1,558.38x = 1,838,976.38
  5. Step 5: Solve for x
    x = 1,838,976.38/1,558.38
  6. Step 6: Final answer
    x = 1,180.06

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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.