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Finding the Fourth Proportional to 5,279.32, 7,919.12 and 4,048.96

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Solution

The fourth proportional to 5,279.32, 7,919.12 and 4,048.96 is: 6,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.32 : 7,919.12 = 4,048.96 : x
  2. Step 2: Convert to fraction form
    5,279.32/7,919.12 = 4,048.96/x
  3. Step 3: Cross multiply
    5,279.32x = 7,919.12 × 4,048.96
  4. Step 4: Simplify right side
    5,279.32x = 32,064,200.12
  5. Step 5: Solve for x
    x = 32,064,200.12/5,279.32
  6. Step 6: Final answer
    x = 6,073.55

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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.