Home / 8,815.76-12,160.68-5,983.28

Finding the Fourth Proportional to 8,815.76, 12,160.68 and 5,983.28

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Solution

The fourth proportional to 8,815.76, 12,160.68 and 5,983.28 is: 8,253.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.76 : 12,160.68 = 5,983.28 : x
  2. Step 2: Convert to fraction form
    8,815.76/12,160.68 = 5,983.28/x
  3. Step 3: Cross multiply
    8,815.76x = 12,160.68 × 5,983.28
  4. Step 4: Simplify right side
    8,815.76x = 72,760,753.43
  5. Step 5: Solve for x
    x = 72,760,753.43/8,815.76
  6. Step 6: Final answer
    x = 8,253.49

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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.