Home / 1,787.91-2,467.56-1,079.79

Finding the Fourth Proportional to 1,787.91, 2,467.56 and 1,079.79

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Solution

The fourth proportional to 1,787.91, 2,467.56 and 1,079.79 is: 1,490.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.91 : 2,467.56 = 1,079.79 : x
  2. Step 2: Convert to fraction form
    1,787.91/2,467.56 = 1,079.79/x
  3. Step 3: Cross multiply
    1,787.91x = 2,467.56 × 1,079.79
  4. Step 4: Simplify right side
    1,787.91x = 2,664,446.61
  5. Step 5: Solve for x
    x = 2,664,446.61/1,787.91
  6. Step 6: Final answer
    x = 1,490.26

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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.