Home / 5,170.82-7,133.45-3,180.65

Finding the Fourth Proportional to 5,170.82, 7,133.45 and 3,180.65

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Solution

The fourth proportional to 5,170.82, 7,133.45 and 3,180.65 is: 4,387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.82 : 7,133.45 = 3,180.65 : x
  2. Step 2: Convert to fraction form
    5,170.82/7,133.45 = 3,180.65/x
  3. Step 3: Cross multiply
    5,170.82x = 7,133.45 × 3,180.65
  4. Step 4: Simplify right side
    5,170.82x = 22,688,956.17
  5. Step 5: Solve for x
    x = 22,688,956.17/5,170.82
  6. Step 6: Final answer
    x = 4,387.89

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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.