Home / 3,387.49-5,081.87-1,538.73

Finding the Fourth Proportional to 3,387.49, 5,081.87 and 1,538.73

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Solution

The fourth proportional to 3,387.49, 5,081.87 and 1,538.73 is: 2,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.49 : 5,081.87 = 1,538.73 : x
  2. Step 2: Convert to fraction form
    3,387.49/5,081.87 = 1,538.73/x
  3. Step 3: Cross multiply
    3,387.49x = 5,081.87 × 1,538.73
  4. Step 4: Simplify right side
    3,387.49x = 7,819,618.13
  5. Step 5: Solve for x
    x = 7,819,618.13/3,387.49
  6. Step 6: Final answer
    x = 2,308.38

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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.