Home / 3,680.24-5,520.45-1,215.28

Finding the Fourth Proportional to 3,680.24, 5,520.45 and 1,215.28

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Solution

The fourth proportional to 3,680.24, 5,520.45 and 1,215.28 is: 1,822.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.24 : 5,520.45 = 1,215.28 : x
  2. Step 2: Convert to fraction form
    3,680.24/5,520.45 = 1,215.28/x
  3. Step 3: Cross multiply
    3,680.24x = 5,520.45 × 1,215.28
  4. Step 4: Simplify right side
    3,680.24x = 6,708,864.87
  5. Step 5: Solve for x
    x = 6,708,864.87/3,680.24
  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.