Home / 2,278.92-3,143.12-1,649.54

Finding the Fourth Proportional to 2,278.92, 3,143.12 and 1,649.54

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Solution

The fourth proportional to 2,278.92, 3,143.12 and 1,649.54 is: 2,275.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.92 : 3,143.12 = 1,649.54 : x
  2. Step 2: Convert to fraction form
    2,278.92/3,143.12 = 1,649.54/x
  3. Step 3: Cross multiply
    2,278.92x = 3,143.12 × 1,649.54
  4. Step 4: Simplify right side
    2,278.92x = 5,184,702.16
  5. Step 5: Solve for x
    x = 5,184,702.16/2,278.92
  6. Step 6: Final answer
    x = 2,275.07

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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.