Home / 3,128.33-4,694.45-1,279.46

Finding the Fourth Proportional to 3,128.33, 4,694.45 and 1,279.46

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Solution

The fourth proportional to 3,128.33, 4,694.45 and 1,279.46 is: 1,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.33 : 4,694.45 = 1,279.46 : x
  2. Step 2: Convert to fraction form
    3,128.33/4,694.45 = 1,279.46/x
  3. Step 3: Cross multiply
    3,128.33x = 4,694.45 × 1,279.46
  4. Step 4: Simplify right side
    3,128.33x = 6,006,331.13
  5. Step 5: Solve for x
    x = 6,006,331.13/3,128.33
  6. Step 6: Final answer
    x = 1,919.98

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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.