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Finding the Fourth Proportional to 7,968.72, 11,952.64 and 2,774.96

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Solution

The fourth proportional to 7,968.72, 11,952.64 and 2,774.96 is: 4,162.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.72 : 11,952.64 = 2,774.96 : x
  2. Step 2: Convert to fraction form
    7,968.72/11,952.64 = 2,774.96/x
  3. Step 3: Cross multiply
    7,968.72x = 11,952.64 × 2,774.96
  4. Step 4: Simplify right side
    7,968.72x = 33,168,097.89
  5. Step 5: Solve for x
    x = 33,168,097.89/7,968.72
  6. Step 6: Final answer
    x = 4,162.29

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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.