Home / 3,961.08-5,933.49-1,980.78

Finding the Fourth Proportional to 3,961.08, 5,933.49 and 1,980.78

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Solution

The fourth proportional to 3,961.08, 5,933.49 and 1,980.78 is: 2,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.08 : 5,933.49 = 1,980.78 : x
  2. Step 2: Convert to fraction form
    3,961.08/5,933.49 = 1,980.78/x
  3. Step 3: Cross multiply
    3,961.08x = 5,933.49 × 1,980.78
  4. Step 4: Simplify right side
    3,961.08x = 11,752,938.32
  5. Step 5: Solve for x
    x = 11,752,938.32/3,961.08
  6. Step 6: Final answer
    x = 2,967.10

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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.