Home / 5,175.33-7,762.89-1,279.77

Finding the Fourth Proportional to 5,175.33, 7,762.89 and 1,279.77

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Solution

The fourth proportional to 5,175.33, 7,762.89 and 1,279.77 is: 1,919.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.33 : 7,762.89 = 1,279.77 : x
  2. Step 2: Convert to fraction form
    5,175.33/7,762.89 = 1,279.77/x
  3. Step 3: Cross multiply
    5,175.33x = 7,762.89 × 1,279.77
  4. Step 4: Simplify right side
    5,175.33x = 9,934,713.74
  5. Step 5: Solve for x
    x = 9,934,713.74/5,175.33
  6. Step 6: Final answer
    x = 1,919.63

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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.