Home / 2,439.55-3,661.23-979.66

Finding the Fourth Proportional to 2,439.55, 3,661.23 and 979.66

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Solution

The fourth proportional to 2,439.55, 3,661.23 and 979.66 is: 1,470.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.55 : 3,661.23 = 979.66 : x
  2. Step 2: Convert to fraction form
    2,439.55/3,661.23 = 979.66/x
  3. Step 3: Cross multiply
    2,439.55x = 3,661.23 × 979.66
  4. Step 4: Simplify right side
    2,439.55x = 3,586,760.58
  5. Step 5: Solve for x
    x = 3,586,760.58/2,439.55
  6. Step 6: Final answer
    x = 1,470.25

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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.