Home / 7,974.16-11,961.30-2,780.02

Finding the Fourth Proportional to 7,974.16, 11,961.30 and 2,780.02

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Solution

The fourth proportional to 7,974.16, 11,961.30 and 2,780.02 is: 4,170.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.16 : 11,961.30 = 2,780.02 : x
  2. Step 2: Convert to fraction form
    7,974.16/11,961.30 = 2,780.02/x
  3. Step 3: Cross multiply
    7,974.16x = 11,961.30 × 2,780.02
  4. Step 4: Simplify right side
    7,974.16x = 33,252,653.23
  5. Step 5: Solve for x
    x = 33,252,653.23/7,974.16
  6. Step 6: Final answer
    x = 4,170.05

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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.