Home / 2,878.77-3,973.68-1,995.75

Finding the Fourth Proportional to 2,878.77, 3,973.68 and 1,995.75

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Solution

The fourth proportional to 2,878.77, 3,973.68 and 1,995.75 is: 2,754.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.77 : 3,973.68 = 1,995.75 : x
  2. Step 2: Convert to fraction form
    2,878.77/3,973.68 = 1,995.75/x
  3. Step 3: Cross multiply
    2,878.77x = 3,973.68 × 1,995.75
  4. Step 4: Simplify right side
    2,878.77x = 7,930,471.86
  5. Step 5: Solve for x
    x = 7,930,471.86/2,878.77
  6. Step 6: Final answer
    x = 2,754.81

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1.5x scale

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.