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Finding the Fourth Proportional to 2,689.74, 3,711.93 and 1,494.79

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Solution

The fourth proportional to 2,689.74, 3,711.93 and 1,494.79 is: 2,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.74 : 3,711.93 = 1,494.79 : x
  2. Step 2: Convert to fraction form
    2,689.74/3,711.93 = 1,494.79/x
  3. Step 3: Cross multiply
    2,689.74x = 3,711.93 × 1,494.79
  4. Step 4: Simplify right side
    2,689.74x = 5,548,540.96
  5. Step 5: Solve for x
    x = 5,548,540.96/2,689.74
  6. Step 6: Final answer
    x = 2,062.85

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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.