Home / 3,965.09-5,939.56-1,878.77

Finding the Fourth Proportional to 3,965.09, 5,939.56 and 1,878.77

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Solution

The fourth proportional to 3,965.09, 5,939.56 and 1,878.77 is: 2,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.09 : 5,939.56 = 1,878.77 : x
  2. Step 2: Convert to fraction form
    3,965.09/5,939.56 = 1,878.77/x
  3. Step 3: Cross multiply
    3,965.09x = 5,939.56 × 1,878.77
  4. Step 4: Simplify right side
    3,965.09x = 11,159,057.75
  5. Step 5: Solve for x
    x = 11,159,057.75/3,965.09
  6. Step 6: Final answer
    x = 2,814.33

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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.