Home / 5,121.68-7,682.65-2,001.56

Finding the Fourth Proportional to 5,121.68, 7,682.65 and 2,001.56

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Solution

The fourth proportional to 5,121.68, 7,682.65 and 2,001.56 is: 3,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.68 : 7,682.65 = 2,001.56 : x
  2. Step 2: Convert to fraction form
    5,121.68/7,682.65 = 2,001.56/x
  3. Step 3: Cross multiply
    5,121.68x = 7,682.65 × 2,001.56
  4. Step 4: Simplify right side
    5,121.68x = 15,377,241.52
  5. Step 5: Solve for x
    x = 15,377,241.52/5,121.68
  6. Step 6: Final answer
    x = 3,002.39

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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.