Home / 5,120.28-7,682.31-2,001.78

Finding the Fourth Proportional to 5,120.28, 7,682.31 and 2,001.78

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Solution

The fourth proportional to 5,120.28, 7,682.31 and 2,001.78 is: 3,003.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.28 : 7,682.31 = 2,001.78 : x
  2. Step 2: Convert to fraction form
    5,120.28/7,682.31 = 2,001.78/x
  3. Step 3: Cross multiply
    5,120.28x = 7,682.31 × 2,001.78
  4. Step 4: Simplify right side
    5,120.28x = 15,378,294.51
  5. Step 5: Solve for x
    x = 15,378,294.51/5,120.28
  6. Step 6: Final answer
    x = 3,003.41

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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.