Home / 5,168.52-7,129.62-3,177.72

Finding the Fourth Proportional to 5,168.52, 7,129.62 and 3,177.72

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Solution

The fourth proportional to 5,168.52, 7,129.62 and 3,177.72 is: 4,383.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.52 : 7,129.62 = 3,177.72 : x
  2. Step 2: Convert to fraction form
    5,168.52/7,129.62 = 3,177.72/x
  3. Step 3: Cross multiply
    5,168.52x = 7,129.62 × 3,177.72
  4. Step 4: Simplify right side
    5,168.52x = 22,655,936.07
  5. Step 5: Solve for x
    x = 22,655,936.07/5,168.52
  6. Step 6: Final answer
    x = 4,383.45

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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.