Home / 7,769.12-11,655-2,845.64

Finding the Fourth Proportional to 7,769.12, 11,655 and 2,845.64

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Solution

The fourth proportional to 7,769.12, 11,655 and 2,845.64 is: 4,268.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.12 : 11,655 = 2,845.64 : x
  2. Step 2: Convert to fraction form
    7,769.12/11,655 = 2,845.64/x
  3. Step 3: Cross multiply
    7,769.12x = 11,655 × 2,845.64
  4. Step 4: Simplify right side
    7,769.12x = 33,165,934.20
  5. Step 5: Solve for x
    x = 33,165,934.20/7,769.12
  6. Step 6: Final answer
    x = 4,268.94

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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.