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Finding the Fourth Proportional to 3,705.32, 5,558 and 2,165.24

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Solution

The fourth proportional to 3,705.32, 5,558 and 2,165.24 is: 3,247.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.32 : 5,558 = 2,165.24 : x
  2. Step 2: Convert to fraction form
    3,705.32/5,558 = 2,165.24/x
  3. Step 3: Cross multiply
    3,705.32x = 5,558 × 2,165.24
  4. Step 4: Simplify right side
    3,705.32x = 12,034,403.92
  5. Step 5: Solve for x
    x = 12,034,403.92/3,705.32
  6. Step 6: Final answer
    x = 3,247.87

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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.