Home / 2,634.78-3,952.68-1,095.78

Finding the Fourth Proportional to 2,634.78, 3,952.68 and 1,095.78

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Solution

The fourth proportional to 2,634.78, 3,952.68 and 1,095.78 is: 1,643.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.78 : 3,952.68 = 1,095.78 : x
  2. Step 2: Convert to fraction form
    2,634.78/3,952.68 = 1,095.78/x
  3. Step 3: Cross multiply
    2,634.78x = 3,952.68 × 1,095.78
  4. Step 4: Simplify right side
    2,634.78x = 4,331,267.69
  5. Step 5: Solve for x
    x = 4,331,267.69/2,634.78
  6. Step 6: Final answer
    x = 1,643.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.