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Finding the Fourth Proportional to 2,613.30, 3,918.83 and 881.14

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Solution

The fourth proportional to 2,613.30, 3,918.83 and 881.14 is: 1,321.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.30 : 3,918.83 = 881.14 : x
  2. Step 2: Convert to fraction form
    2,613.30/3,918.83 = 881.14/x
  3. Step 3: Cross multiply
    2,613.30x = 3,918.83 × 881.14
  4. Step 4: Simplify right side
    2,613.30x = 3,453,037.87
  5. Step 5: Solve for x
    x = 3,453,037.87/2,613.30
  6. Step 6: Final answer
    x = 1,321.33

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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.