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Finding the Fourth Proportional to 2,791.83, 3,852.36 and 1,672.55

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Solution

The fourth proportional to 2,791.83, 3,852.36 and 1,672.55 is: 2,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.83 : 3,852.36 = 1,672.55 : x
  2. Step 2: Convert to fraction form
    2,791.83/3,852.36 = 1,672.55/x
  3. Step 3: Cross multiply
    2,791.83x = 3,852.36 × 1,672.55
  4. Step 4: Simplify right side
    2,791.83x = 6,443,259.90
  5. Step 5: Solve for x
    x = 6,443,259.90/2,791.83
  6. Step 6: Final answer
    x = 2,307.90

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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.