Home / 2,634.68-3,635.79-1,689.50

Finding the Fourth Proportional to 2,634.68, 3,635.79 and 1,689.50

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Solution

The fourth proportional to 2,634.68, 3,635.79 and 1,689.50 is: 2,331.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.68 : 3,635.79 = 1,689.50 : x
  2. Step 2: Convert to fraction form
    2,634.68/3,635.79 = 1,689.50/x
  3. Step 3: Cross multiply
    2,634.68x = 3,635.79 × 1,689.50
  4. Step 4: Simplify right side
    2,634.68x = 6,142,667.21
  5. Step 5: Solve for x
    x = 6,142,667.21/2,634.68
  6. Step 6: Final answer
    x = 2,331.47

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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.