Home / 7,286.10-10,919.55-5,231.70

Finding the Fourth Proportional to 7,286.10, 10,919.55 and 5,231.70

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Solution

The fourth proportional to 7,286.10, 10,919.55 and 5,231.70 is: 7,840.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,286.10 : 10,919.55 = 5,231.70 : x
  2. Step 2: Convert to fraction form
    7,286.10/10,919.55 = 5,231.70/x
  3. Step 3: Cross multiply
    7,286.10x = 10,919.55 × 5,231.70
  4. Step 4: Simplify right side
    7,286.10x = 57,127,809.74
  5. Step 5: Solve for x
    x = 57,127,809.74/7,286.10
  6. Step 6: Final answer
    x = 7,840.66

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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.