Home / 8,919.36-13,381.38-3,076.38

Finding the Fourth Proportional to 8,919.36, 13,381.38 and 3,076.38

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Solution

The fourth proportional to 8,919.36, 13,381.38 and 3,076.38 is: 4,615.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.36 : 13,381.38 = 3,076.38 : x
  2. Step 2: Convert to fraction form
    8,919.36/13,381.38 = 3,076.38/x
  3. Step 3: Cross multiply
    8,919.36x = 13,381.38 × 3,076.38
  4. Step 4: Simplify right side
    8,919.36x = 41,166,209.80
  5. Step 5: Solve for x
    x = 41,166,209.80/8,919.36
  6. Step 6: Final answer
    x = 4,615.38

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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.