Home / 1,308.26-1,961.43-614.57

Finding the Fourth Proportional to 1,308.26, 1,961.43 and 614.57

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Solution

The fourth proportional to 1,308.26, 1,961.43 and 614.57 is: 921.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.26 : 1,961.43 = 614.57 : x
  2. Step 2: Convert to fraction form
    1,308.26/1,961.43 = 614.57/x
  3. Step 3: Cross multiply
    1,308.26x = 1,961.43 × 614.57
  4. Step 4: Simplify right side
    1,308.26x = 1,205,436.04
  5. Step 5: Solve for x
    x = 1,205,436.04/1,308.26
  6. Step 6: Final answer
    x = 921.40

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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.