Home / 5,521.78-7,615.92-3,843.28

Finding the Fourth Proportional to 5,521.78, 7,615.92 and 3,843.28

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Solution

The fourth proportional to 5,521.78, 7,615.92 and 3,843.28 is: 5,300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.78 : 7,615.92 = 3,843.28 : x
  2. Step 2: Convert to fraction form
    5,521.78/7,615.92 = 3,843.28/x
  3. Step 3: Cross multiply
    5,521.78x = 7,615.92 × 3,843.28
  4. Step 4: Simplify right side
    5,521.78x = 29,270,113.02
  5. Step 5: Solve for x
    x = 29,270,113.02/5,521.78
  6. Step 6: Final answer
    x = 5,300.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.