Home / 2,211.24-3,314.80-1,387.01

Finding the Fourth Proportional to 2,211.24, 3,314.80 and 1,387.01

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Solution

The fourth proportional to 2,211.24, 3,314.80 and 1,387.01 is: 2,079.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.24 : 3,314.80 = 1,387.01 : x
  2. Step 2: Convert to fraction form
    2,211.24/3,314.80 = 1,387.01/x
  3. Step 3: Cross multiply
    2,211.24x = 3,314.80 × 1,387.01
  4. Step 4: Simplify right side
    2,211.24x = 4,597,660.75
  5. Step 5: Solve for x
    x = 4,597,660.75/2,211.24
  6. Step 6: Final answer
    x = 2,079.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.