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Finding the Fourth Proportional to 7,322.64, 10,979.76 and 2,255.51

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Solution

The fourth proportional to 7,322.64, 10,979.76 and 2,255.51 is: 3,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.64 : 10,979.76 = 2,255.51 : x
  2. Step 2: Convert to fraction form
    7,322.64/10,979.76 = 2,255.51/x
  3. Step 3: Cross multiply
    7,322.64x = 10,979.76 × 2,255.51
  4. Step 4: Simplify right side
    7,322.64x = 24,764,903.58
  5. Step 5: Solve for x
    x = 24,764,903.58/7,322.64
  6. Step 6: Final answer
    x = 3,381.96

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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.