Home / 7,978.77-11,968.23-2,784.66

Finding the Fourth Proportional to 7,978.77, 11,968.23 and 2,784.66

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Solution

The fourth proportional to 7,978.77, 11,968.23 and 2,784.66 is: 4,177.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978.77 : 11,968.23 = 2,784.66 : x
  2. Step 2: Convert to fraction form
    7,978.77/11,968.23 = 2,784.66/x
  3. Step 3: Cross multiply
    7,978.77x = 11,968.23 × 2,784.66
  4. Step 4: Simplify right side
    7,978.77x = 33,327,451.35
  5. Step 5: Solve for x
    x = 33,327,451.35/7,978.77
  6. Step 6: Final answer
    x = 4,177.02

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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.