Home / 3,660.36-5,051.29-1,981.78

Finding the Fourth Proportional to 3,660.36, 5,051.29 and 1,981.78

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Solution

The fourth proportional to 3,660.36, 5,051.29 and 1,981.78 is: 2,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.36 : 5,051.29 = 1,981.78 : x
  2. Step 2: Convert to fraction form
    3,660.36/5,051.29 = 1,981.78/x
  3. Step 3: Cross multiply
    3,660.36x = 5,051.29 × 1,981.78
  4. Step 4: Simplify right side
    3,660.36x = 10,010,545.50
  5. Step 5: Solve for x
    x = 10,010,545.50/3,660.36
  6. Step 6: Final answer
    x = 2,734.85

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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.