Home / 9,215.48-13,821.32-2,640.44

Finding the Fourth Proportional to 9,215.48, 13,821.32 and 2,640.44

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Solution

The fourth proportional to 9,215.48, 13,821.32 and 2,640.44 is: 3,960.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.48 : 13,821.32 = 2,640.44 : x
  2. Step 2: Convert to fraction form
    9,215.48/13,821.32 = 2,640.44/x
  3. Step 3: Cross multiply
    9,215.48x = 13,821.32 × 2,640.44
  4. Step 4: Simplify right side
    9,215.48x = 36,494,366.18
  5. Step 5: Solve for x
    x = 36,494,366.18/9,215.48
  6. Step 6: Final answer
    x = 3,960.12

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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.