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Finding the Fourth Proportional to 2,787.60, 4,182.04 and 1,554.40

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Solution

The fourth proportional to 2,787.60, 4,182.04 and 1,554.40 is: 2,331.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.60 : 4,182.04 = 1,554.40 : x
  2. Step 2: Convert to fraction form
    2,787.60/4,182.04 = 1,554.40/x
  3. Step 3: Cross multiply
    2,787.60x = 4,182.04 × 1,554.40
  4. Step 4: Simplify right side
    2,787.60x = 6,500,562.98
  5. Step 5: Solve for x
    x = 6,500,562.98/2,787.60
  6. Step 6: Final answer
    x = 2,331.96

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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.