Home / 2,781.16-4,172.08-1,299.62

Finding the Fourth Proportional to 2,781.16, 4,172.08 and 1,299.62

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Solution

The fourth proportional to 2,781.16, 4,172.08 and 1,299.62 is: 1,949.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.16 : 4,172.08 = 1,299.62 : x
  2. Step 2: Convert to fraction form
    2,781.16/4,172.08 = 1,299.62/x
  3. Step 3: Cross multiply
    2,781.16x = 4,172.08 × 1,299.62
  4. Step 4: Simplify right side
    2,781.16x = 5,422,120.15
  5. Step 5: Solve for x
    x = 5,422,120.15/2,781.16
  6. Step 6: Final answer
    x = 1,949.59

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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.