Home / 2,101.80-3,138.03-1,894.44

Finding the Fourth Proportional to 2,101.80, 3,138.03 and 1,894.44

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Solution

The fourth proportional to 2,101.80, 3,138.03 and 1,894.44 is: 2,828.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.80 : 3,138.03 = 1,894.44 : x
  2. Step 2: Convert to fraction form
    2,101.80/3,138.03 = 1,894.44/x
  3. Step 3: Cross multiply
    2,101.80x = 3,138.03 × 1,894.44
  4. Step 4: Simplify right side
    2,101.80x = 5,944,809.55
  5. Step 5: Solve for x
    x = 5,944,809.55/2,101.80
  6. Step 6: Final answer
    x = 2,828.44

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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.