Home / 3,139.30-4,696.80-2,045.80

Finding the Fourth Proportional to 3,139.30, 4,696.80 and 2,045.80

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Solution

The fourth proportional to 3,139.30, 4,696.80 and 2,045.80 is: 3,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.30 : 4,696.80 = 2,045.80 : x
  2. Step 2: Convert to fraction form
    3,139.30/4,696.80 = 2,045.80/x
  3. Step 3: Cross multiply
    3,139.30x = 4,696.80 × 2,045.80
  4. Step 4: Simplify right side
    3,139.30x = 9,608,713.44
  5. Step 5: Solve for x
    x = 9,608,713.44/3,139.30
  6. Step 6: Final answer
    x = 3,060.78

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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.