Home / 4,759.88-7,139.75-1,838.12

Finding the Fourth Proportional to 4,759.88, 7,139.75 and 1,838.12

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Solution

The fourth proportional to 4,759.88, 7,139.75 and 1,838.12 is: 2,757.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759.88 : 7,139.75 = 1,838.12 : x
  2. Step 2: Convert to fraction form
    4,759.88/7,139.75 = 1,838.12/x
  3. Step 3: Cross multiply
    4,759.88x = 7,139.75 × 1,838.12
  4. Step 4: Simplify right side
    4,759.88x = 13,123,672.38
  5. Step 5: Solve for x
    x = 13,123,672.38/4,759.88
  6. Step 6: Final answer
    x = 2,757.15

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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.