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Finding the Fourth Proportional to 7,929.44, 11,888.64 and 2,998.88

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Solution

The fourth proportional to 7,929.44, 11,888.64 and 2,998.88 is: 4,496.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.44 : 11,888.64 = 2,998.88 : x
  2. Step 2: Convert to fraction form
    7,929.44/11,888.64 = 2,998.88/x
  3. Step 3: Cross multiply
    7,929.44x = 11,888.64 × 2,998.88
  4. Step 4: Simplify right side
    7,929.44x = 35,652,604.72
  5. Step 5: Solve for x
    x = 35,652,604.72/7,929.44
  6. Step 6: Final answer
    x = 4,496.23

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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.