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Finding the Fourth Proportional to 8,991.92, 13,478.68 and 3,443.76

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Solution

The fourth proportional to 8,991.92, 13,478.68 and 3,443.76 is: 5,162.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.92 : 13,478.68 = 3,443.76 : x
  2. Step 2: Convert to fraction form
    8,991.92/13,478.68 = 3,443.76/x
  3. Step 3: Cross multiply
    8,991.92x = 13,478.68 × 3,443.76
  4. Step 4: Simplify right side
    8,991.92x = 46,417,339.04
  5. Step 5: Solve for x
    x = 46,417,339.04/8,991.92
  6. Step 6: Final answer
    x = 5,162.12

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1.5x scale

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.