Home / 1,308.20-1,961.20-614.52

Finding the Fourth Proportional to 1,308.20, 1,961.20 and 614.52

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Solution

The fourth proportional to 1,308.20, 1,961.20 and 614.52 is: 921.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.20 : 1,961.20 = 614.52 : x
  2. Step 2: Convert to fraction form
    1,308.20/1,961.20 = 614.52/x
  3. Step 3: Cross multiply
    1,308.20x = 1,961.20 × 614.52
  4. Step 4: Simplify right side
    1,308.20x = 1,205,196.62
  5. Step 5: Solve for x
    x = 1,205,196.62/1,308.20
  6. Step 6: Final answer
    x = 921.26

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1.5x scale

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.