Home / 7,286.25-10,931.19-2,355.78

Finding the Fourth Proportional to 7,286.25, 10,931.19 and 2,355.78

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Solution

The fourth proportional to 7,286.25, 10,931.19 and 2,355.78 is: 3,534.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,286.25 : 10,931.19 = 2,355.78 : x
  2. Step 2: Convert to fraction form
    7,286.25/10,931.19 = 2,355.78/x
  3. Step 3: Cross multiply
    7,286.25x = 10,931.19 × 2,355.78
  4. Step 4: Simplify right side
    7,286.25x = 25,751,478.78
  5. Step 5: Solve for x
    x = 25,751,478.78/7,286.25
  6. Step 6: Final answer
    x = 3,534.26

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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.