Home / 1,279.80-1,916.82-1,252.44

Finding the Fourth Proportional to 1,279.80, 1,916.82 and 1,252.44

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Solution

The fourth proportional to 1,279.80, 1,916.82 and 1,252.44 is: 1,875.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.80 : 1,916.82 = 1,252.44 : x
  2. Step 2: Convert to fraction form
    1,279.80/1,916.82 = 1,252.44/x
  3. Step 3: Cross multiply
    1,279.80x = 1,916.82 × 1,252.44
  4. Step 4: Simplify right side
    1,279.80x = 2,400,702.04
  5. Step 5: Solve for x
    x = 2,400,702.04/1,279.80
  6. Step 6: Final answer
    x = 1,875.84

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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.