Home / 1,419.82-1,959.99-1,331.26

Finding the Fourth Proportional to 1,419.82, 1,959.99 and 1,331.26

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Solution

The fourth proportional to 1,419.82, 1,959.99 and 1,331.26 is: 1,837.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.82 : 1,959.99 = 1,331.26 : x
  2. Step 2: Convert to fraction form
    1,419.82/1,959.99 = 1,331.26/x
  3. Step 3: Cross multiply
    1,419.82x = 1,959.99 × 1,331.26
  4. Step 4: Simplify right side
    1,419.82x = 2,609,256.29
  5. Step 5: Solve for x
    x = 2,609,256.29/1,419.82
  6. Step 6: Final answer
    x = 1,837.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.