Home / 5,139.11-7,713.48-2,675.72

Finding the Fourth Proportional to 5,139.11, 7,713.48 and 2,675.72

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Solution

The fourth proportional to 5,139.11, 7,713.48 and 2,675.72 is: 4,016.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.11 : 7,713.48 = 2,675.72 : x
  2. Step 2: Convert to fraction form
    5,139.11/7,713.48 = 2,675.72/x
  3. Step 3: Cross multiply
    5,139.11x = 7,713.48 × 2,675.72
  4. Step 4: Simplify right side
    5,139.11x = 20,639,112.71
  5. Step 5: Solve for x
    x = 20,639,112.71/5,139.11
  6. Step 6: Final answer
    x = 4,016.09

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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.