Home / 2,919.95-4,034.78-2,220.11

Finding the Fourth Proportional to 2,919.95, 4,034.78 and 2,220.11

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Solution

The fourth proportional to 2,919.95, 4,034.78 and 2,220.11 is: 3,067.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.95 : 4,034.78 = 2,220.11 : x
  2. Step 2: Convert to fraction form
    2,919.95/4,034.78 = 2,220.11/x
  3. Step 3: Cross multiply
    2,919.95x = 4,034.78 × 2,220.11
  4. Step 4: Simplify right side
    2,919.95x = 8,957,655.43
  5. Step 5: Solve for x
    x = 8,957,655.43/2,919.95
  6. Step 6: Final answer
    x = 3,067.74

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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.