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Finding the Fourth Proportional to 7,326.78, 10,990.68 and 2,944.23

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Solution

The fourth proportional to 7,326.78, 10,990.68 and 2,944.23 is: 4,416.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,326.78 : 10,990.68 = 2,944.23 : x
  2. Step 2: Convert to fraction form
    7,326.78/10,990.68 = 2,944.23/x
  3. Step 3: Cross multiply
    7,326.78x = 10,990.68 × 2,944.23
  4. Step 4: Simplify right side
    7,326.78x = 32,359,089.78
  5. Step 5: Solve for x
    x = 32,359,089.78/7,326.78
  6. Step 6: Final answer
    x = 4,416.55

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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.