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Finding the Fourth Proportional to 1,787.60, 2,691.02 and 1,626.32

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Solution

The fourth proportional to 1,787.60, 2,691.02 and 1,626.32 is: 2,448.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.60 : 2,691.02 = 1,626.32 : x
  2. Step 2: Convert to fraction form
    1,787.60/2,691.02 = 1,626.32/x
  3. Step 3: Cross multiply
    1,787.60x = 2,691.02 × 1,626.32
  4. Step 4: Simplify right side
    1,787.60x = 4,376,459.65
  5. Step 5: Solve for x
    x = 4,376,459.65/1,787.60
  6. Step 6: Final answer
    x = 2,448.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.