Home / 2,489.92-3,434.07-2,190.52

Finding the Fourth Proportional to 2,489.92, 3,434.07 and 2,190.52

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Solution

The fourth proportional to 2,489.92, 3,434.07 and 2,190.52 is: 3,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.92 : 3,434.07 = 2,190.52 : x
  2. Step 2: Convert to fraction form
    2,489.92/3,434.07 = 2,190.52/x
  3. Step 3: Cross multiply
    2,489.92x = 3,434.07 × 2,190.52
  4. Step 4: Simplify right side
    2,489.92x = 7,522,399.02
  5. Step 5: Solve for x
    x = 7,522,399.02/2,489.92
  6. Step 6: Final answer
    x = 3,021.14

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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.