Home / 5,175.59-7,763.40-1,279.98

Finding the Fourth Proportional to 5,175.59, 7,763.40 and 1,279.98

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Solution

The fourth proportional to 5,175.59, 7,763.40 and 1,279.98 is: 1,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.59 : 7,763.40 = 1,279.98 : x
  2. Step 2: Convert to fraction form
    5,175.59/7,763.40 = 1,279.98/x
  3. Step 3: Cross multiply
    5,175.59x = 7,763.40 × 1,279.98
  4. Step 4: Simplify right side
    5,175.59x = 9,936,996.73
  5. Step 5: Solve for x
    x = 9,936,996.73/5,175.59
  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.