Home / 7,286.28-10,931.04-2,091.76

Finding the Fourth Proportional to 7,286.28, 10,931.04 and 2,091.76

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Solution

The fourth proportional to 7,286.28, 10,931.04 and 2,091.76 is: 3,138.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,286.28 : 10,931.04 = 2,091.76 : x
  2. Step 2: Convert to fraction form
    7,286.28/10,931.04 = 2,091.76/x
  3. Step 3: Cross multiply
    7,286.28x = 10,931.04 × 2,091.76
  4. Step 4: Simplify right side
    7,286.28x = 22,865,112.23
  5. Step 5: Solve for x
    x = 22,865,112.23/7,286.28
  6. Step 6: Final answer
    x = 3,138.11

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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.