Home / 3,983.05-5,974.40-1,209.66

Finding the Fourth Proportional to 3,983.05, 5,974.40 and 1,209.66

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Solution

The fourth proportional to 3,983.05, 5,974.40 and 1,209.66 is: 1,814.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.05 : 5,974.40 = 1,209.66 : x
  2. Step 2: Convert to fraction form
    3,983.05/5,974.40 = 1,209.66/x
  3. Step 3: Cross multiply
    3,983.05x = 5,974.40 × 1,209.66
  4. Step 4: Simplify right side
    3,983.05x = 7,226,992.70
  5. Step 5: Solve for x
    x = 7,226,992.70/3,983.05
  6. Step 6: Final answer
    x = 1,814.44

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1.5x scale

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.