Home / 1,634.78-2,447.31-1,085.06

Finding the Fourth Proportional to 1,634.78, 2,447.31 and 1,085.06

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Solution

The fourth proportional to 1,634.78, 2,447.31 and 1,085.06 is: 1,624.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.78 : 2,447.31 = 1,085.06 : x
  2. Step 2: Convert to fraction form
    1,634.78/2,447.31 = 1,085.06/x
  3. Step 3: Cross multiply
    1,634.78x = 2,447.31 × 1,085.06
  4. Step 4: Simplify right side
    1,634.78x = 2,655,478.19
  5. Step 5: Solve for x
    x = 2,655,478.19/1,634.78
  6. Step 6: Final answer
    x = 1,624.36

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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.