Home / 5,138.20-7,090.68-3,015.01

Finding the Fourth Proportional to 5,138.20, 7,090.68 and 3,015.01

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Solution

The fourth proportional to 5,138.20, 7,090.68 and 3,015.01 is: 4,160.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.20 : 7,090.68 = 3,015.01 : x
  2. Step 2: Convert to fraction form
    5,138.20/7,090.68 = 3,015.01/x
  3. Step 3: Cross multiply
    5,138.20x = 7,090.68 × 3,015.01
  4. Step 4: Simplify right side
    5,138.20x = 21,378,471.11
  5. Step 5: Solve for x
    x = 21,378,471.11/5,138.20
  6. Step 6: Final answer
    x = 4,160.69

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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.