Home / 7,971.22-11,956.88-2,777.09

Finding the Fourth Proportional to 7,971.22, 11,956.88 and 2,777.09

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Solution

The fourth proportional to 7,971.22, 11,956.88 and 2,777.09 is: 4,165.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.22 : 11,956.88 = 2,777.09 : x
  2. Step 2: Convert to fraction form
    7,971.22/11,956.88 = 2,777.09/x
  3. Step 3: Cross multiply
    7,971.22x = 11,956.88 × 2,777.09
  4. Step 4: Simplify right side
    7,971.22x = 33,205,331.88
  5. Step 5: Solve for x
    x = 33,205,331.88/7,971.22
  6. Step 6: Final answer
    x = 4,165.65

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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.