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Finding the Fourth Proportional to 11,480.60, 17,221.17 and 3,689.48

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Solution

The fourth proportional to 11,480.60, 17,221.17 and 3,689.48 is: 5,534.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,480.60 : 17,221.17 = 3,689.48 : x
  2. Step 2: Convert to fraction form
    11,480.60/17,221.17 = 3,689.48/x
  3. Step 3: Cross multiply
    11,480.60x = 17,221.17 × 3,689.48
  4. Step 4: Simplify right side
    11,480.60x = 63,537,162.29
  5. Step 5: Solve for x
    x = 63,537,162.29/11,480.60
  6. Step 6: Final answer
    x = 5,534.31

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1.5x scale

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.