Home / 7,977.76-11,968.80-2,784.08

Finding the Fourth Proportional to 7,977.76, 11,968.80 and 2,784.08

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Solution

The fourth proportional to 7,977.76, 11,968.80 and 2,784.08 is: 4,176.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.76 : 11,968.80 = 2,784.08 : x
  2. Step 2: Convert to fraction form
    7,977.76/11,968.80 = 2,784.08/x
  3. Step 3: Cross multiply
    7,977.76x = 11,968.80 × 2,784.08
  4. Step 4: Simplify right side
    7,977.76x = 33,322,096.70
  5. Step 5: Solve for x
    x = 33,322,096.70/7,977.76
  6. Step 6: Final answer
    x = 4,176.87

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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.