Home / 8,123.82-12,179.85-5,484.78

Finding the Fourth Proportional to 8,123.82, 12,179.85 and 5,484.78

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Solution

The fourth proportional to 8,123.82, 12,179.85 and 5,484.78 is: 8,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.82 : 12,179.85 = 5,484.78 : x
  2. Step 2: Convert to fraction form
    8,123.82/12,179.85 = 5,484.78/x
  3. Step 3: Cross multiply
    8,123.82x = 12,179.85 × 5,484.78
  4. Step 4: Simplify right side
    8,123.82x = 66,803,797.68
  5. Step 5: Solve for x
    x = 66,803,797.68/8,123.82
  6. Step 6: Final answer
    x = 8,223.20

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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.