Home / 8,919.36-13,377.60-2,764.80

Finding the Fourth Proportional to 8,919.36, 13,377.60 and 2,764.80

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Solution

The fourth proportional to 8,919.36, 13,377.60 and 2,764.80 is: 4,146.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.36 : 13,377.60 = 2,764.80 : x
  2. Step 2: Convert to fraction form
    8,919.36/13,377.60 = 2,764.80/x
  3. Step 3: Cross multiply
    8,919.36x = 13,377.60 × 2,764.80
  4. Step 4: Simplify right side
    8,919.36x = 36,986,388.48
  5. Step 5: Solve for x
    x = 36,986,388.48/8,919.36
  6. Step 6: Final answer
    x = 4,146.75

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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.