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Finding the Fourth Proportional to 2,687.54, 3,708.77 and 1,508.60

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Solution

The fourth proportional to 2,687.54, 3,708.77 and 1,508.60 is: 2,081.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.54 : 3,708.77 = 1,508.60 : x
  2. Step 2: Convert to fraction form
    2,687.54/3,708.77 = 1,508.60/x
  3. Step 3: Cross multiply
    2,687.54x = 3,708.77 × 1,508.60
  4. Step 4: Simplify right side
    2,687.54x = 5,595,024.34
  5. Step 5: Solve for x
    x = 5,595,024.34/2,687.54
  6. Step 6: Final answer
    x = 2,081.84

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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.