Home / 3,821.16-5,731.20-1,223.76

Finding the Fourth Proportional to 3,821.16, 5,731.20 and 1,223.76

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Solution

The fourth proportional to 3,821.16, 5,731.20 and 1,223.76 is: 1,835.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.16 : 5,731.20 = 1,223.76 : x
  2. Step 2: Convert to fraction form
    3,821.16/5,731.20 = 1,223.76/x
  3. Step 3: Cross multiply
    3,821.16x = 5,731.20 × 1,223.76
  4. Step 4: Simplify right side
    3,821.16x = 7,013,613.31
  5. Step 5: Solve for x
    x = 7,013,613.31/3,821.16
  6. Step 6: Final answer
    x = 1,835.47

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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.