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Finding the Fourth Proportional to 5,082, 7,624.28 and 1,434

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Solution

The fourth proportional to 5,082, 7,624.28 and 1,434 is: 2,151.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,082 : 7,624.28 = 1,434 : x
  2. Step 2: Convert to fraction form
    5,082/7,624.28 = 1,434/x
  3. Step 3: Cross multiply
    5,082x = 7,624.28 × 1,434
  4. Step 4: Simplify right side
    5,082x = 10,933,217.52
  5. Step 5: Solve for x
    x = 10,933,217.52/5,082
  6. Step 6: Final answer
    x = 2,151.36

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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.