Home / 2,219.67-3,326.98-1,387.12

Finding the Fourth Proportional to 2,219.67, 3,326.98 and 1,387.12

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Solution

The fourth proportional to 2,219.67, 3,326.98 and 1,387.12 is: 2,079.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.67 : 3,326.98 = 1,387.12 : x
  2. Step 2: Convert to fraction form
    2,219.67/3,326.98 = 1,387.12/x
  3. Step 3: Cross multiply
    2,219.67x = 3,326.98 × 1,387.12
  4. Step 4: Simplify right side
    2,219.67x = 4,614,896.93
  5. Step 5: Solve for x
    x = 4,614,896.93/2,219.67
  6. Step 6: Final answer
    x = 2,079.09

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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.