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Finding the Fourth Proportional to 3,659.32, 5,490 and 1,469.58

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Solution

The fourth proportional to 3,659.32, 5,490 and 1,469.58 is: 2,204.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.32 : 5,490 = 1,469.58 : x
  2. Step 2: Convert to fraction form
    3,659.32/5,490 = 1,469.58/x
  3. Step 3: Cross multiply
    3,659.32x = 5,490 × 1,469.58
  4. Step 4: Simplify right side
    3,659.32x = 8,068,014.79
  5. Step 5: Solve for x
    x = 8,068,014.79/3,659.32
  6. Step 6: Final answer
    x = 2,204.79

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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.