Home / 2,853.18-4,279.80-878.79

Finding the Fourth Proportional to 2,853.18, 4,279.80 and 878.79

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Solution

The fourth proportional to 2,853.18, 4,279.80 and 878.79 is: 1,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.18 : 4,279.80 = 878.79 : x
  2. Step 2: Convert to fraction form
    2,853.18/4,279.80 = 878.79/x
  3. Step 3: Cross multiply
    2,853.18x = 4,279.80 × 878.79
  4. Step 4: Simplify right side
    2,853.18x = 3,761,045.44
  5. Step 5: Solve for x
    x = 3,761,045.44/2,853.18
  6. Step 6: Final answer
    x = 1,318.19

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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.