Home / 2,278.08-3,139.44-2,091.84

Finding the Fourth Proportional to 2,278.08, 3,139.44 and 2,091.84

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Solution

The fourth proportional to 2,278.08, 3,139.44 and 2,091.84 is: 2,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.08 : 3,139.44 = 2,091.84 : x
  2. Step 2: Convert to fraction form
    2,278.08/3,139.44 = 2,091.84/x
  3. Step 3: Cross multiply
    2,278.08x = 3,139.44 × 2,091.84
  4. Step 4: Simplify right side
    2,278.08x = 6,567,206.17
  5. Step 5: Solve for x
    x = 6,567,206.17/2,278.08
  6. Step 6: Final answer
    x = 2,882.78

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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.