Home / 7,318.28-10,977.78-2,124.56

Finding the Fourth Proportional to 7,318.28, 10,977.78 and 2,124.56

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Solution

The fourth proportional to 7,318.28, 10,977.78 and 2,124.56 is: 3,186.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.28 : 10,977.78 = 2,124.56 : x
  2. Step 2: Convert to fraction form
    7,318.28/10,977.78 = 2,124.56/x
  3. Step 3: Cross multiply
    7,318.28x = 10,977.78 × 2,124.56
  4. Step 4: Simplify right side
    7,318.28x = 23,322,952.28
  5. Step 5: Solve for x
    x = 23,322,952.28/7,318.28
  6. Step 6: Final answer
    x = 3,186.94

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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.