Home / 2,489.40-3,391.92-2,436.12

Finding the Fourth Proportional to 2,489.40, 3,391.92 and 2,436.12

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Solution

The fourth proportional to 2,489.40, 3,391.92 and 2,436.12 is: 3,319.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.40 : 3,391.92 = 2,436.12 : x
  2. Step 2: Convert to fraction form
    2,489.40/3,391.92 = 2,436.12/x
  3. Step 3: Cross multiply
    2,489.40x = 3,391.92 × 2,436.12
  4. Step 4: Simplify right side
    2,489.40x = 8,263,124.15
  5. Step 5: Solve for x
    x = 8,263,124.15/2,489.40
  6. Step 6: Final answer
    x = 3,319.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.