Home / 5,139.27-7,708.10-2,216.79

Finding the Fourth Proportional to 5,139.27, 7,708.10 and 2,216.79

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Solution

The fourth proportional to 5,139.27, 7,708.10 and 2,216.79 is: 3,324.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.27 : 7,708.10 = 2,216.79 : x
  2. Step 2: Convert to fraction form
    5,139.27/7,708.10 = 2,216.79/x
  3. Step 3: Cross multiply
    5,139.27x = 7,708.10 × 2,216.79
  4. Step 4: Simplify right side
    5,139.27x = 17,087,227.92
  5. Step 5: Solve for x
    x = 17,087,227.92/5,139.27
  6. Step 6: Final answer
    x = 3,324.84

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1.5x scale

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.