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Finding the Fourth Proportional to 2,652.41, 3,978.65 and 1,354.79

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Solution

The fourth proportional to 2,652.41, 3,978.65 and 1,354.79 is: 2,032.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652.41 : 3,978.65 = 1,354.79 : x
  2. Step 2: Convert to fraction form
    2,652.41/3,978.65 = 1,354.79/x
  3. Step 3: Cross multiply
    2,652.41x = 3,978.65 × 1,354.79
  4. Step 4: Simplify right side
    2,652.41x = 5,390,248.57
  5. Step 5: Solve for x
    x = 5,390,248.57/2,652.41
  6. Step 6: Final answer
    x = 2,032.21

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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.