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Finding the Fourth Proportional to 2,079.74, 2,853.87 and 1,891.79

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Solution

The fourth proportional to 2,079.74, 2,853.87 and 1,891.79 is: 2,595.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.74 : 2,853.87 = 1,891.79 : x
  2. Step 2: Convert to fraction form
    2,079.74/2,853.87 = 1,891.79/x
  3. Step 3: Cross multiply
    2,079.74x = 2,853.87 × 1,891.79
  4. Step 4: Simplify right side
    2,079.74x = 5,398,912.07
  5. Step 5: Solve for x
    x = 5,398,912.07/2,079.74
  6. Step 6: Final answer
    x = 2,595.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.