Home / 3,139.31-4,328.28-2,228.87

Finding the Fourth Proportional to 3,139.31, 4,328.28 and 2,228.87

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Solution

The fourth proportional to 3,139.31, 4,328.28 and 2,228.87 is: 3,073.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.31 : 4,328.28 = 2,228.87 : x
  2. Step 2: Convert to fraction form
    3,139.31/4,328.28 = 2,228.87/x
  3. Step 3: Cross multiply
    3,139.31x = 4,328.28 × 2,228.87
  4. Step 4: Simplify right side
    3,139.31x = 9,647,151.80
  5. Step 5: Solve for x
    x = 9,647,151.80/3,139.31
  6. Step 6: Final answer
    x = 3,073.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.