Home / 5,139.24-7,081.70-3,546.38

Finding the Fourth Proportional to 5,139.24, 7,081.70 and 3,546.38

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Solution

The fourth proportional to 5,139.24, 7,081.70 and 3,546.38 is: 4,886.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.24 : 7,081.70 = 3,546.38 : x
  2. Step 2: Convert to fraction form
    5,139.24/7,081.70 = 3,546.38/x
  3. Step 3: Cross multiply
    5,139.24x = 7,081.70 × 3,546.38
  4. Step 4: Simplify right side
    5,139.24x = 25,114,346.11
  5. Step 5: Solve for x
    x = 25,114,346.11/5,139.24
  6. Step 6: Final answer
    x = 4,886.78

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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.