Home / 4,489.40-6,720.63-2,728.97

Finding the Fourth Proportional to 4,489.40, 6,720.63 and 2,728.97

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Solution

The fourth proportional to 4,489.40, 6,720.63 and 2,728.97 is: 4,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,489.40 : 6,720.63 = 2,728.97 : x
  2. Step 2: Convert to fraction form
    4,489.40/6,720.63 = 2,728.97/x
  3. Step 3: Cross multiply
    4,489.40x = 6,720.63 × 2,728.97
  4. Step 4: Simplify right side
    4,489.40x = 18,340,397.65
  5. Step 5: Solve for x
    x = 18,340,397.65/4,489.40
  6. Step 6: Final answer
    x = 4,085.27

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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.