Home / 3,139.40-4,708.02-2,217.08

Finding the Fourth Proportional to 3,139.40, 4,708.02 and 2,217.08

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Solution

The fourth proportional to 3,139.40, 4,708.02 and 2,217.08 is: 3,324.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.40 : 4,708.02 = 2,217.08 : x
  2. Step 2: Convert to fraction form
    3,139.40/4,708.02 = 2,217.08/x
  3. Step 3: Cross multiply
    3,139.40x = 4,708.02 × 2,217.08
  4. Step 4: Simplify right side
    3,139.40x = 10,438,056.98
  5. Step 5: Solve for x
    x = 10,438,056.98/3,139.40
  6. Step 6: Final answer
    x = 3,324.86

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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.