Home / 5,121.37-7,675.74-2,654.77

Finding the Fourth Proportional to 5,121.37, 7,675.74 and 2,654.77

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Solution

The fourth proportional to 5,121.37, 7,675.74 and 2,654.77 is: 3,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.37 : 7,675.74 = 2,654.77 : x
  2. Step 2: Convert to fraction form
    5,121.37/7,675.74 = 2,654.77/x
  3. Step 3: Cross multiply
    5,121.37x = 7,675.74 × 2,654.77
  4. Step 4: Simplify right side
    5,121.37x = 20,377,324.28
  5. Step 5: Solve for x
    x = 20,377,324.28/5,121.37
  6. Step 6: Final answer
    x = 3,978.88

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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.