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Finding the Fourth Proportional to 1,861.01, 2,791.51 and 884.15

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Solution

The fourth proportional to 1,861.01, 2,791.51 and 884.15 is: 1,326.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.01 : 2,791.51 = 884.15 : x
  2. Step 2: Convert to fraction form
    1,861.01/2,791.51 = 884.15/x
  3. Step 3: Cross multiply
    1,861.01x = 2,791.51 × 884.15
  4. Step 4: Simplify right side
    1,861.01x = 2,468,115.78
  5. Step 5: Solve for x
    x = 2,468,115.78/1,861.01
  6. Step 6: Final answer
    x = 1,326.22

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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.