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Finding the Fourth Proportional to 7,991.92, 11,029.04 and 4,407.04

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Solution

The fourth proportional to 7,991.92, 11,029.04 and 4,407.04 is: 6,081.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.92 : 11,029.04 = 4,407.04 : x
  2. Step 2: Convert to fraction form
    7,991.92/11,029.04 = 4,407.04/x
  3. Step 3: Cross multiply
    7,991.92x = 11,029.04 × 4,407.04
  4. Step 4: Simplify right side
    7,991.92x = 48,605,420.44
  5. Step 5: Solve for x
    x = 48,605,420.44/7,991.92
  6. Step 6: Final answer
    x = 6,081.82

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1.5x scale

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.