Home / 5,139.03-7,091.51-3,042.75

Finding the Fourth Proportional to 5,139.03, 7,091.51 and 3,042.75

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Solution

The fourth proportional to 5,139.03, 7,091.51 and 3,042.75 is: 4,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.03 : 7,091.51 = 3,042.75 : x
  2. Step 2: Convert to fraction form
    5,139.03/7,091.51 = 3,042.75/x
  3. Step 3: Cross multiply
    5,139.03x = 7,091.51 × 3,042.75
  4. Step 4: Simplify right side
    5,139.03x = 21,577,676.84
  5. Step 5: Solve for x
    x = 21,577,676.84/5,139.03
  6. Step 6: Final answer
    x = 4,198.78

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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.