Home / 5,090.96-7,639.25-2,131.53

Finding the Fourth Proportional to 5,090.96, 7,639.25 and 2,131.53

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Solution

The fourth proportional to 5,090.96, 7,639.25 and 2,131.53 is: 3,198.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.96 : 7,639.25 = 2,131.53 : x
  2. Step 2: Convert to fraction form
    5,090.96/7,639.25 = 2,131.53/x
  3. Step 3: Cross multiply
    5,090.96x = 7,639.25 × 2,131.53
  4. Step 4: Simplify right side
    5,090.96x = 16,283,251.25
  5. Step 5: Solve for x
    x = 16,283,251.25/5,090.96
  6. Step 6: Final answer
    x = 3,198.46

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1.5x scale

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.