Home / 2,139.24-3,205.30-2,058.20

Finding the Fourth Proportional to 2,139.24, 3,205.30 and 2,058.20

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Solution

The fourth proportional to 2,139.24, 3,205.30 and 2,058.20 is: 3,083.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.24 : 3,205.30 = 2,058.20 : x
  2. Step 2: Convert to fraction form
    2,139.24/3,205.30 = 2,058.20/x
  3. Step 3: Cross multiply
    2,139.24x = 3,205.30 × 2,058.20
  4. Step 4: Simplify right side
    2,139.24x = 6,597,148.46
  5. Step 5: Solve for x
    x = 6,597,148.46/2,139.24
  6. Step 6: Final answer
    x = 3,083.87

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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.