Home / 5,138.13-7,090.69-3,247.75

Finding the Fourth Proportional to 5,138.13, 7,090.69 and 3,247.75

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Solution

The fourth proportional to 5,138.13, 7,090.69 and 3,247.75 is: 4,481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.13 : 7,090.69 = 3,247.75 : x
  2. Step 2: Convert to fraction form
    5,138.13/7,090.69 = 3,247.75/x
  3. Step 3: Cross multiply
    5,138.13x = 7,090.69 × 3,247.75
  4. Step 4: Simplify right side
    5,138.13x = 23,028,755.40
  5. Step 5: Solve for x
    x = 23,028,755.40/5,138.13
  6. Step 6: Final answer
    x = 4,481.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.