Home / 5,090.20-7,631.70-2,318.20

Finding the Fourth Proportional to 5,090.20, 7,631.70 and 2,318.20

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Solution

The fourth proportional to 5,090.20, 7,631.70 and 2,318.20 is: 3,475.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.20 : 7,631.70 = 2,318.20 : x
  2. Step 2: Convert to fraction form
    5,090.20/7,631.70 = 2,318.20/x
  3. Step 3: Cross multiply
    5,090.20x = 7,631.70 × 2,318.20
  4. Step 4: Simplify right side
    5,090.20x = 17,691,806.94
  5. Step 5: Solve for x
    x = 17,691,806.94/5,090.20
  6. Step 6: Final answer
    x = 3,475.66

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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.