Home / 3,687.03-5,087.90-2,115.13

Finding the Fourth Proportional to 3,687.03, 5,087.90 and 2,115.13

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Solution

The fourth proportional to 3,687.03, 5,087.90 and 2,115.13 is: 2,918.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.03 : 5,087.90 = 2,115.13 : x
  2. Step 2: Convert to fraction form
    3,687.03/5,087.90 = 2,115.13/x
  3. Step 3: Cross multiply
    3,687.03x = 5,087.90 × 2,115.13
  4. Step 4: Simplify right side
    3,687.03x = 10,761,551.92
  5. Step 5: Solve for x
    x = 10,761,551.92/3,687.03
  6. Step 6: Final answer
    x = 2,918.76

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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.