Home / 4,177.78-5,769.21-3,128.02

Finding the Fourth Proportional to 4,177.78, 5,769.21 and 3,128.02

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Solution

The fourth proportional to 4,177.78, 5,769.21 and 3,128.02 is: 4,319.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,177.78 : 5,769.21 = 3,128.02 : x
  2. Step 2: Convert to fraction form
    4,177.78/5,769.21 = 3,128.02/x
  3. Step 3: Cross multiply
    4,177.78x = 5,769.21 × 3,128.02
  4. Step 4: Simplify right side
    4,177.78x = 18,046,204.26
  5. Step 5: Solve for x
    x = 18,046,204.26/4,177.78
  6. Step 6: Final answer
    x = 4,319.57

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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.