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Finding the Fourth Proportional to 5,394.60, 7,444.02 and 3,979.04

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Solution

The fourth proportional to 5,394.60, 7,444.02 and 3,979.04 is: 5,490.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,394.60 : 7,444.02 = 3,979.04 : x
  2. Step 2: Convert to fraction form
    5,394.60/7,444.02 = 3,979.04/x
  3. Step 3: Cross multiply
    5,394.60x = 7,444.02 × 3,979.04
  4. Step 4: Simplify right side
    5,394.60x = 29,620,050.53
  5. Step 5: Solve for x
    x = 29,620,050.53/5,394.60
  6. Step 6: Final answer
    x = 5,490.69

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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.