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Finding the Fourth Proportional to 3,691.58, 5,089.49 and 2,982.63

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Solution

The fourth proportional to 3,691.58, 5,089.49 and 2,982.63 is: 4,112.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.58 : 5,089.49 = 2,982.63 : x
  2. Step 2: Convert to fraction form
    3,691.58/5,089.49 = 2,982.63/x
  3. Step 3: Cross multiply
    3,691.58x = 5,089.49 × 2,982.63
  4. Step 4: Simplify right side
    3,691.58x = 15,180,065.56
  5. Step 5: Solve for x
    x = 15,180,065.56/3,691.58
  6. Step 6: Final answer
    x = 4,112.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.