Home / 2,959.28-4,078.32-2,211.92

Finding the Fourth Proportional to 2,959.28, 4,078.32 and 2,211.92

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Solution

The fourth proportional to 2,959.28, 4,078.32 and 2,211.92 is: 3,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.28 : 4,078.32 = 2,211.92 : x
  2. Step 2: Convert to fraction form
    2,959.28/4,078.32 = 2,211.92/x
  3. Step 3: Cross multiply
    2,959.28x = 4,078.32 × 2,211.92
  4. Step 4: Simplify right side
    2,959.28x = 9,020,917.57
  5. Step 5: Solve for x
    x = 9,020,917.57/2,959.28
  6. Step 6: Final answer
    x = 3,048.35

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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.