Home / 5,139.11-7,711.61-2,799.02

Finding the Fourth Proportional to 5,139.11, 7,711.61 and 2,799.02

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Solution

The fourth proportional to 5,139.11, 7,711.61 and 2,799.02 is: 4,200.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.11 : 7,711.61 = 2,799.02 : x
  2. Step 2: Convert to fraction form
    5,139.11/7,711.61 = 2,799.02/x
  3. Step 3: Cross multiply
    5,139.11x = 7,711.61 × 2,799.02
  4. Step 4: Simplify right side
    5,139.11x = 21,584,955.91
  5. Step 5: Solve for x
    x = 21,584,955.91/5,139.11
  6. Step 6: Final answer
    x = 4,200.13

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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.