Home / 5,388.28-8,082.36-1,439.53

Finding the Fourth Proportional to 5,388.28, 8,082.36 and 1,439.53

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Solution

The fourth proportional to 5,388.28, 8,082.36 and 1,439.53 is: 2,159.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.28 : 8,082.36 = 1,439.53 : x
  2. Step 2: Convert to fraction form
    5,388.28/8,082.36 = 1,439.53/x
  3. Step 3: Cross multiply
    5,388.28x = 8,082.36 × 1,439.53
  4. Step 4: Simplify right side
    5,388.28x = 11,634,799.69
  5. Step 5: Solve for x
    x = 11,634,799.69/5,388.28
  6. Step 6: Final answer
    x = 2,159.28

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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.