Home / 1,338.29-1,995.38-1,292.44

Finding the Fourth Proportional to 1,338.29, 1,995.38 and 1,292.44

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Solution

The fourth proportional to 1,338.29, 1,995.38 and 1,292.44 is: 1,927.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.29 : 1,995.38 = 1,292.44 : x
  2. Step 2: Convert to fraction form
    1,338.29/1,995.38 = 1,292.44/x
  3. Step 3: Cross multiply
    1,338.29x = 1,995.38 × 1,292.44
  4. Step 4: Simplify right side
    1,338.29x = 2,578,913.33
  5. Step 5: Solve for x
    x = 2,578,913.33/1,338.29
  6. Step 6: Final answer
    x = 1,927.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.