Home / 2,122.49-3,180.67-1,507.43

Finding the Fourth Proportional to 2,122.49, 3,180.67 and 1,507.43

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Solution

The fourth proportional to 2,122.49, 3,180.67 and 1,507.43 is: 2,258.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.49 : 3,180.67 = 1,507.43 : x
  2. Step 2: Convert to fraction form
    2,122.49/3,180.67 = 1,507.43/x
  3. Step 3: Cross multiply
    2,122.49x = 3,180.67 × 1,507.43
  4. Step 4: Simplify right side
    2,122.49x = 4,794,641.56
  5. Step 5: Solve for x
    x = 4,794,641.56/2,122.49
  6. Step 6: Final answer
    x = 2,258.97

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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.