Home / 2,878.20-4,319.49-1,951.56

Finding the Fourth Proportional to 2,878.20, 4,319.49 and 1,951.56

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Solution

The fourth proportional to 2,878.20, 4,319.49 and 1,951.56 is: 2,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.20 : 4,319.49 = 1,951.56 : x
  2. Step 2: Convert to fraction form
    2,878.20/4,319.49 = 1,951.56/x
  3. Step 3: Cross multiply
    2,878.20x = 4,319.49 × 1,951.56
  4. Step 4: Simplify right side
    2,878.20x = 8,429,743.90
  5. Step 5: Solve for x
    x = 8,429,743.90/2,878.20
  6. Step 6: Final answer
    x = 2,928.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.