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Finding the Fourth Proportional to 2,863.78, 4,296.33 and 889.30

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Solution

The fourth proportional to 2,863.78, 4,296.33 and 889.30 is: 1,334.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,863.78 : 4,296.33 = 889.30 : x
  2. Step 2: Convert to fraction form
    2,863.78/4,296.33 = 889.30/x
  3. Step 3: Cross multiply
    2,863.78x = 4,296.33 × 889.30
  4. Step 4: Simplify right side
    2,863.78x = 3,820,731.64
  5. Step 5: Solve for x
    x = 3,820,731.64/2,863.78
  6. Step 6: Final answer
    x = 1,334.16

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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.