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Finding the Fourth Proportional to 2,687.88, 3,709.08 and 1,508.73

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Solution

The fourth proportional to 2,687.88, 3,709.08 and 1,508.73 is: 2,081.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.88 : 3,709.08 = 1,508.73 : x
  2. Step 2: Convert to fraction form
    2,687.88/3,709.08 = 1,508.73/x
  3. Step 3: Cross multiply
    2,687.88x = 3,709.08 × 1,508.73
  4. Step 4: Simplify right side
    2,687.88x = 5,596,000.27
  5. Step 5: Solve for x
    x = 5,596,000.27/2,687.88
  6. Step 6: Final answer
    x = 2,081.94

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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.