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Finding the Fourth Proportional to 7,326.44, 10,988.22 and 1,989.56

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Solution

The fourth proportional to 7,326.44, 10,988.22 and 1,989.56 is: 2,983.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,326.44 : 10,988.22 = 1,989.56 : x
  2. Step 2: Convert to fraction form
    7,326.44/10,988.22 = 1,989.56/x
  3. Step 3: Cross multiply
    7,326.44x = 10,988.22 × 1,989.56
  4. Step 4: Simplify right side
    7,326.44x = 21,861,722.98
  5. Step 5: Solve for x
    x = 21,861,722.98/7,326.44
  6. Step 6: Final answer
    x = 2,983.95

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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.