Home / 5,161.28-7,122.60-2,803.52

Finding the Fourth Proportional to 5,161.28, 7,122.60 and 2,803.52

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Solution

The fourth proportional to 5,161.28, 7,122.60 and 2,803.52 is: 3,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.28 : 7,122.60 = 2,803.52 : x
  2. Step 2: Convert to fraction form
    5,161.28/7,122.60 = 2,803.52/x
  3. Step 3: Cross multiply
    5,161.28x = 7,122.60 × 2,803.52
  4. Step 4: Simplify right side
    5,161.28x = 19,968,351.55
  5. Step 5: Solve for x
    x = 19,968,351.55/5,161.28
  6. Step 6: Final answer
    x = 3,868.88

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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.