Home / 2,817.14-4,211.31-2,079.86

Finding the Fourth Proportional to 2,817.14, 4,211.31 and 2,079.86

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Solution

The fourth proportional to 2,817.14, 4,211.31 and 2,079.86 is: 3,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.14 : 4,211.31 = 2,079.86 : x
  2. Step 2: Convert to fraction form
    2,817.14/4,211.31 = 2,079.86/x
  3. Step 3: Cross multiply
    2,817.14x = 4,211.31 × 2,079.86
  4. Step 4: Simplify right side
    2,817.14x = 8,758,924.82
  5. Step 5: Solve for x
    x = 8,758,924.82/2,817.14
  6. Step 6: Final answer
    x = 3,109.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.