Home / 5,427.28-8,123.10-4,121.56

Finding the Fourth Proportional to 5,427.28, 8,123.10 and 4,121.56

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Solution

The fourth proportional to 5,427.28, 8,123.10 and 4,121.56 is: 6,168.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.28 : 8,123.10 = 4,121.56 : x
  2. Step 2: Convert to fraction form
    5,427.28/8,123.10 = 4,121.56/x
  3. Step 3: Cross multiply
    5,427.28x = 8,123.10 × 4,121.56
  4. Step 4: Simplify right side
    5,427.28x = 33,479,844.04
  5. Step 5: Solve for x
    x = 33,479,844.04/5,427.28
  6. Step 6: Final answer
    x = 6,168.81

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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.