Home / 4,920.12-7,382.25-2,147.49

Finding the Fourth Proportional to 4,920.12, 7,382.25 and 2,147.49

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Solution

The fourth proportional to 4,920.12, 7,382.25 and 2,147.49 is: 3,222.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.12 : 7,382.25 = 2,147.49 : x
  2. Step 2: Convert to fraction form
    4,920.12/7,382.25 = 2,147.49/x
  3. Step 3: Cross multiply
    4,920.12x = 7,382.25 × 2,147.49
  4. Step 4: Simplify right side
    4,920.12x = 15,853,308.05
  5. Step 5: Solve for x
    x = 15,853,308.05/4,920.12
  6. Step 6: Final answer
    x = 3,222.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.