Home / 7,987.77-11,974.10-2,790.27

Finding the Fourth Proportional to 7,987.77, 11,974.10 and 2,790.27

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Solution

The fourth proportional to 7,987.77, 11,974.10 and 2,790.27 is: 4,182.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.77 : 11,974.10 = 2,790.27 : x
  2. Step 2: Convert to fraction form
    7,987.77/11,974.10 = 2,790.27/x
  3. Step 3: Cross multiply
    7,987.77x = 11,974.10 × 2,790.27
  4. Step 4: Simplify right side
    7,987.77x = 33,410,958.06
  5. Step 5: Solve for x
    x = 33,410,958.06/7,987.77
  6. Step 6: Final answer
    x = 4,182.76

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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.