Home / 3,101.18-4,279.79-1,775.15

Finding the Fourth Proportional to 3,101.18, 4,279.79 and 1,775.15

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Solution

The fourth proportional to 3,101.18, 4,279.79 and 1,775.15 is: 2,449.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.18 : 4,279.79 = 1,775.15 : x
  2. Step 2: Convert to fraction form
    3,101.18/4,279.79 = 1,775.15/x
  3. Step 3: Cross multiply
    3,101.18x = 4,279.79 × 1,775.15
  4. Step 4: Simplify right side
    3,101.18x = 7,597,238.94
  5. Step 5: Solve for x
    x = 7,597,238.94/3,101.18
  6. Step 6: Final answer
    x = 2,449.79

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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.