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Finding the Fourth Proportional to 2,845.63, 4,269.07 and 871.27

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Solution

The fourth proportional to 2,845.63, 4,269.07 and 871.27 is: 1,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.63 : 4,269.07 = 871.27 : x
  2. Step 2: Convert to fraction form
    2,845.63/4,269.07 = 871.27/x
  3. Step 3: Cross multiply
    2,845.63x = 4,269.07 × 871.27
  4. Step 4: Simplify right side
    2,845.63x = 3,719,506.14
  5. Step 5: Solve for x
    x = 3,719,506.14/2,845.63
  6. Step 6: Final answer
    x = 1,307.10

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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.