Home / 3,687.76-5,087.32-2,115.44

Finding the Fourth Proportional to 3,687.76, 5,087.32 and 2,115.44

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Solution

The fourth proportional to 3,687.76, 5,087.32 and 2,115.44 is: 2,918.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.76 : 5,087.32 = 2,115.44 : x
  2. Step 2: Convert to fraction form
    3,687.76/5,087.32 = 2,115.44/x
  3. Step 3: Cross multiply
    3,687.76x = 5,087.32 × 2,115.44
  4. Step 4: Simplify right side
    3,687.76x = 10,761,920.22
  5. Step 5: Solve for x
    x = 10,761,920.22/3,687.76
  6. Step 6: Final answer
    x = 2,918.28

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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.