Home / 2,856.06-4,279.50-2,121.93

Finding the Fourth Proportional to 2,856.06, 4,279.50 and 2,121.93

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Solution

The fourth proportional to 2,856.06, 4,279.50 and 2,121.93 is: 3,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.06 : 4,279.50 = 2,121.93 : x
  2. Step 2: Convert to fraction form
    2,856.06/4,279.50 = 2,121.93/x
  3. Step 3: Cross multiply
    2,856.06x = 4,279.50 × 2,121.93
  4. Step 4: Simplify right side
    2,856.06x = 9,080,799.44
  5. Step 5: Solve for x
    x = 9,080,799.44/2,856.06
  6. Step 6: Final answer
    x = 3,179.48

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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.