Home / 2,215.91-3,321.99-1,045.23

Finding the Fourth Proportional to 2,215.91, 3,321.99 and 1,045.23

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Solution

The fourth proportional to 2,215.91, 3,321.99 and 1,045.23 is: 1,566.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.91 : 3,321.99 = 1,045.23 : x
  2. Step 2: Convert to fraction form
    2,215.91/3,321.99 = 1,045.23/x
  3. Step 3: Cross multiply
    2,215.91x = 3,321.99 × 1,045.23
  4. Step 4: Simplify right side
    2,215.91x = 3,472,243.61
  5. Step 5: Solve for x
    x = 3,472,243.61/2,215.91
  6. Step 6: Final answer
    x = 1,566.96

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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.