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Finding the Fourth Proportional to 2,791.67, 3,852.61 and 1,672.38

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Solution

The fourth proportional to 2,791.67, 3,852.61 and 1,672.38 is: 2,307.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.67 : 3,852.61 = 1,672.38 : x
  2. Step 2: Convert to fraction form
    2,791.67/3,852.61 = 1,672.38/x
  3. Step 3: Cross multiply
    2,791.67x = 3,852.61 × 1,672.38
  4. Step 4: Simplify right side
    2,791.67x = 6,443,027.91
  5. Step 5: Solve for x
    x = 6,443,027.91/2,791.67
  6. Step 6: Final answer
    x = 2,307.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.