Home / 4,086.45-6,129.68-1,488.78

Finding the Fourth Proportional to 4,086.45, 6,129.68 and 1,488.78

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Solution

The fourth proportional to 4,086.45, 6,129.68 and 1,488.78 is: 2,233.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.45 : 6,129.68 = 1,488.78 : x
  2. Step 2: Convert to fraction form
    4,086.45/6,129.68 = 1,488.78/x
  3. Step 3: Cross multiply
    4,086.45x = 6,129.68 × 1,488.78
  4. Step 4: Simplify right side
    4,086.45x = 9,125,737.55
  5. Step 5: Solve for x
    x = 9,125,737.55/4,086.45
  6. Step 6: Final answer
    x = 2,233.17

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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.