Home / 3,139.71-4,331.02-2,003.31

Finding the Fourth Proportional to 3,139.71, 4,331.02 and 2,003.31

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Solution

The fourth proportional to 3,139.71, 4,331.02 and 2,003.31 is: 2,763.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.71 : 4,331.02 = 2,003.31 : x
  2. Step 2: Convert to fraction form
    3,139.71/4,331.02 = 2,003.31/x
  3. Step 3: Cross multiply
    3,139.71x = 4,331.02 × 2,003.31
  4. Step 4: Simplify right side
    3,139.71x = 8,676,362.24
  5. Step 5: Solve for x
    x = 8,676,362.24/3,139.71
  6. Step 6: Final answer
    x = 2,763.43

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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.