Home / 5,149.60-7,107.81-3,556.51

Finding the Fourth Proportional to 5,149.60, 7,107.81 and 3,556.51

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Solution

The fourth proportional to 5,149.60, 7,107.81 and 3,556.51 is: 4,908.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.60 : 7,107.81 = 3,556.51 : x
  2. Step 2: Convert to fraction form
    5,149.60/7,107.81 = 3,556.51/x
  3. Step 3: Cross multiply
    5,149.60x = 7,107.81 × 3,556.51
  4. Step 4: Simplify right side
    5,149.60x = 25,278,997.34
  5. Step 5: Solve for x
    x = 25,278,997.34/5,149.60
  6. Step 6: Final answer
    x = 4,908.92

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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.