Home / 1,388.82-2,083.32-1,369.74

Finding the Fourth Proportional to 1,388.82, 2,083.32 and 1,369.74

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Solution

The fourth proportional to 1,388.82, 2,083.32 and 1,369.74 is: 2,054.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.82 : 2,083.32 = 1,369.74 : x
  2. Step 2: Convert to fraction form
    1,388.82/2,083.32 = 1,369.74/x
  3. Step 3: Cross multiply
    1,388.82x = 2,083.32 × 1,369.74
  4. Step 4: Simplify right side
    1,388.82x = 2,853,606.74
  5. Step 5: Solve for x
    x = 2,853,606.74/1,388.82
  6. Step 6: Final answer
    x = 2,054.70

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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.