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Finding the Fourth Proportional to 1,824.64, 2,517.64 and 1,078.10

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Solution

The fourth proportional to 1,824.64, 2,517.64 and 1,078.10 is: 1,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,824.64 : 2,517.64 = 1,078.10 : x
  2. Step 2: Convert to fraction form
    1,824.64/2,517.64 = 1,078.10/x
  3. Step 3: Cross multiply
    1,824.64x = 2,517.64 × 1,078.10
  4. Step 4: Simplify right side
    1,824.64x = 2,714,267.68
  5. Step 5: Solve for x
    x = 2,714,267.68/1,824.64
  6. Step 6: Final answer
    x = 1,487.56

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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.