Home / 2,273.19-3,137.21-1,278.71

Finding the Fourth Proportional to 2,273.19, 3,137.21 and 1,278.71

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Solution

The fourth proportional to 2,273.19, 3,137.21 and 1,278.71 is: 1,764.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,273.19 : 3,137.21 = 1,278.71 : x
  2. Step 2: Convert to fraction form
    2,273.19/3,137.21 = 1,278.71/x
  3. Step 3: Cross multiply
    2,273.19x = 3,137.21 × 1,278.71
  4. Step 4: Simplify right side
    2,273.19x = 4,011,581.80
  5. Step 5: Solve for x
    x = 4,011,581.80/2,273.19
  6. Step 6: Final answer
    x = 1,764.74

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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.