Home / 1,489.66-2,231.96-933.39

Finding the Fourth Proportional to 1,489.66, 2,231.96 and 933.39

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Solution

The fourth proportional to 1,489.66, 2,231.96 and 933.39 is: 1,398.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.66 : 2,231.96 = 933.39 : x
  2. Step 2: Convert to fraction form
    1,489.66/2,231.96 = 933.39/x
  3. Step 3: Cross multiply
    1,489.66x = 2,231.96 × 933.39
  4. Step 4: Simplify right side
    1,489.66x = 2,083,284.48
  5. Step 5: Solve for x
    x = 2,083,284.48/1,489.66
  6. Step 6: Final answer
    x = 1,398.50

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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.