Home / 5,270.71-7,273.38-2,912.80

Finding the Fourth Proportional to 5,270.71, 7,273.38 and 2,912.80

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Solution

The fourth proportional to 5,270.71, 7,273.38 and 2,912.80 is: 4,019.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.71 : 7,273.38 = 2,912.80 : x
  2. Step 2: Convert to fraction form
    5,270.71/7,273.38 = 2,912.80/x
  3. Step 3: Cross multiply
    5,270.71x = 7,273.38 × 2,912.80
  4. Step 4: Simplify right side
    5,270.71x = 21,185,901.26
  5. Step 5: Solve for x
    x = 21,185,901.26/5,270.71
  6. Step 6: Final answer
    x = 4,019.55

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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.