Home / 3,680.16-5,520.91-1,215.15

Finding the Fourth Proportional to 3,680.16, 5,520.91 and 1,215.15

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Solution

The fourth proportional to 3,680.16, 5,520.91 and 1,215.15 is: 1,822.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.16 : 5,520.91 = 1,215.15 : x
  2. Step 2: Convert to fraction form
    3,680.16/5,520.91 = 1,215.15/x
  3. Step 3: Cross multiply
    3,680.16x = 5,520.91 × 1,215.15
  4. Step 4: Simplify right side
    3,680.16x = 6,708,706.18
  5. Step 5: Solve for x
    x = 6,708,706.18/3,680.16
  6. Step 6: Final answer
    x = 1,822.94

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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.