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Finding the Fourth Proportional to 7,992.46, 11,988.42 and 2,148.76

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Solution

The fourth proportional to 7,992.46, 11,988.42 and 2,148.76 is: 3,223.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.46 : 11,988.42 = 2,148.76 : x
  2. Step 2: Convert to fraction form
    7,992.46/11,988.42 = 2,148.76/x
  3. Step 3: Cross multiply
    7,992.46x = 11,988.42 × 2,148.76
  4. Step 4: Simplify right side
    7,992.46x = 25,760,237.36
  5. Step 5: Solve for x
    x = 25,760,237.36/7,992.46
  6. Step 6: Final answer
    x = 3,223.07

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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.