Home / 1,414.23-2,121.36-634.05

Finding the Fourth Proportional to 1,414.23, 2,121.36 and 634.05

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Solution

The fourth proportional to 1,414.23, 2,121.36 and 634.05 is: 951.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.23 : 2,121.36 = 634.05 : x
  2. Step 2: Convert to fraction form
    1,414.23/2,121.36 = 634.05/x
  3. Step 3: Cross multiply
    1,414.23x = 2,121.36 × 634.05
  4. Step 4: Simplify right side
    1,414.23x = 1,345,048.31
  5. Step 5: Solve for x
    x = 1,345,048.31/1,414.23
  6. Step 6: Final answer
    x = 951.08

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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.