Home / 5,149.27-7,722.97-1,639.65

Finding the Fourth Proportional to 5,149.27, 7,722.97 and 1,639.65

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Solution

The fourth proportional to 5,149.27, 7,722.97 and 1,639.65 is: 2,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.27 : 7,722.97 = 1,639.65 : x
  2. Step 2: Convert to fraction form
    5,149.27/7,722.97 = 1,639.65/x
  3. Step 3: Cross multiply
    5,149.27x = 7,722.97 × 1,639.65
  4. Step 4: Simplify right side
    5,149.27x = 12,662,967.76
  5. Step 5: Solve for x
    x = 12,662,967.76/5,149.27
  6. Step 6: Final answer
    x = 2,459.18

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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.