Home / 5,128.67-7,067.20-3,709.85

Finding the Fourth Proportional to 5,128.67, 7,067.20 and 3,709.85

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Solution

The fourth proportional to 5,128.67, 7,067.20 and 3,709.85 is: 5,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.67 : 7,067.20 = 3,709.85 : x
  2. Step 2: Convert to fraction form
    5,128.67/7,067.20 = 3,709.85/x
  3. Step 3: Cross multiply
    5,128.67x = 7,067.20 × 3,709.85
  4. Step 4: Simplify right side
    5,128.67x = 26,218,254.02
  5. Step 5: Solve for x
    x = 26,218,254.02/5,128.67
  6. Step 6: Final answer
    x = 5,112.10

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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.