Home / 7,981.92-11,966.86-5,509.68

Finding the Fourth Proportional to 7,981.92, 11,966.86 and 5,509.68

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Solution

The fourth proportional to 7,981.92, 11,966.86 and 5,509.68 is: 8,260.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.92 : 11,966.86 = 5,509.68 : x
  2. Step 2: Convert to fraction form
    7,981.92/11,966.86 = 5,509.68/x
  3. Step 3: Cross multiply
    7,981.92x = 11,966.86 × 5,509.68
  4. Step 4: Simplify right side
    7,981.92x = 65,933,569.20
  5. Step 5: Solve for x
    x = 65,933,569.20/7,981.92
  6. Step 6: Final answer
    x = 8,260.36

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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.