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Finding the Fourth Proportional to 2,845.76, 4,268.48 and 871.39

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Solution

The fourth proportional to 2,845.76, 4,268.48 and 871.39 is: 1,307.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.76 : 4,268.48 = 871.39 : x
  2. Step 2: Convert to fraction form
    2,845.76/4,268.48 = 871.39/x
  3. Step 3: Cross multiply
    2,845.76x = 4,268.48 × 871.39
  4. Step 4: Simplify right side
    2,845.76x = 3,719,489.44
  5. Step 5: Solve for x
    x = 3,719,489.44/2,845.76
  6. Step 6: Final answer
    x = 1,307.03

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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.