Home / 8,813.38-13,221.28-2,971.66

Finding the Fourth Proportional to 8,813.38, 13,221.28 and 2,971.66

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Solution

The fourth proportional to 8,813.38, 13,221.28 and 2,971.66 is: 4,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.38 : 13,221.28 = 2,971.66 : x
  2. Step 2: Convert to fraction form
    8,813.38/13,221.28 = 2,971.66/x
  3. Step 3: Cross multiply
    8,813.38x = 13,221.28 × 2,971.66
  4. Step 4: Simplify right side
    8,813.38x = 39,289,119.59
  5. Step 5: Solve for x
    x = 39,289,119.59/8,813.38
  6. Step 6: Final answer
    x = 4,457.90

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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.