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Finding the Fourth Proportional to 1,861.44, 2,791.56 and 1,536

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Solution

The fourth proportional to 1,861.44, 2,791.56 and 1,536 is: 2,303.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.44 : 2,791.56 = 1,536 : x
  2. Step 2: Convert to fraction form
    1,861.44/2,791.56 = 1,536/x
  3. Step 3: Cross multiply
    1,861.44x = 2,791.56 × 1,536
  4. Step 4: Simplify right side
    1,861.44x = 4,287,836.16
  5. Step 5: Solve for x
    x = 4,287,836.16/1,861.44
  6. Step 6: Final answer
    x = 2,303.50

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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.