Home / 7,739.56-10,680.62-4,202.78

Finding the Fourth Proportional to 7,739.56, 10,680.62 and 4,202.78

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Solution

The fourth proportional to 7,739.56, 10,680.62 and 4,202.78 is: 5,799.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.56 : 10,680.62 = 4,202.78 : x
  2. Step 2: Convert to fraction form
    7,739.56/10,680.62 = 4,202.78/x
  3. Step 3: Cross multiply
    7,739.56x = 10,680.62 × 4,202.78
  4. Step 4: Simplify right side
    7,739.56x = 44,888,296.12
  5. Step 5: Solve for x
    x = 44,888,296.12/7,739.56
  6. Step 6: Final answer
    x = 5,799.85

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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.