Home / 1,919.39-2,648.75-1,133.48

Finding the Fourth Proportional to 1,919.39, 2,648.75 and 1,133.48

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Solution

The fourth proportional to 1,919.39, 2,648.75 and 1,133.48 is: 1,564.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.39 : 2,648.75 = 1,133.48 : x
  2. Step 2: Convert to fraction form
    1,919.39/2,648.75 = 1,133.48/x
  3. Step 3: Cross multiply
    1,919.39x = 2,648.75 × 1,133.48
  4. Step 4: Simplify right side
    1,919.39x = 3,002,286.24
  5. Step 5: Solve for x
    x = 3,002,286.24/1,919.39
  6. Step 6: Final answer
    x = 1,564.19

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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.