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Finding the Fourth Proportional to 2,682.88, 3,700.88 and 1,687.79

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Solution

The fourth proportional to 2,682.88, 3,700.88 and 1,687.79 is: 2,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,682.88 : 3,700.88 = 1,687.79 : x
  2. Step 2: Convert to fraction form
    2,682.88/3,700.88 = 1,687.79/x
  3. Step 3: Cross multiply
    2,682.88x = 3,700.88 × 1,687.79
  4. Step 4: Simplify right side
    2,682.88x = 6,246,308.26
  5. Step 5: Solve for x
    x = 6,246,308.26/2,682.88
  6. Step 6: Final answer
    x = 2,328.21

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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.