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Finding the Fourth Proportional to 2,675.85, 3,687.12 and 2,276.12

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Solution

The fourth proportional to 2,675.85, 3,687.12 and 2,276.12 is: 3,136.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.85 : 3,687.12 = 2,276.12 : x
  2. Step 2: Convert to fraction form
    2,675.85/3,687.12 = 2,276.12/x
  3. Step 3: Cross multiply
    2,675.85x = 3,687.12 × 2,276.12
  4. Step 4: Simplify right side
    2,675.85x = 8,392,309.14
  5. Step 5: Solve for x
    x = 8,392,309.14/2,675.85
  6. Step 6: Final answer
    x = 3,136.32

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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.