Home / 8,996.36-13,486.28-3,149.78

Finding the Fourth Proportional to 8,996.36, 13,486.28 and 3,149.78

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Solution

The fourth proportional to 8,996.36, 13,486.28 and 3,149.78 is: 4,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,996.36 : 13,486.28 = 3,149.78 : x
  2. Step 2: Convert to fraction form
    8,996.36/13,486.28 = 3,149.78/x
  3. Step 3: Cross multiply
    8,996.36x = 13,486.28 × 3,149.78
  4. Step 4: Simplify right side
    8,996.36x = 42,478,731.84
  5. Step 5: Solve for x
    x = 42,478,731.84/8,996.36
  6. Step 6: Final answer
    x = 4,721.77

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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.