Home / 7,086.48-9,778.92-4,102.08

Finding the Fourth Proportional to 7,086.48, 9,778.92 and 4,102.08

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Solution

The fourth proportional to 7,086.48, 9,778.92 and 4,102.08 is: 5,660.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,086.48 : 9,778.92 = 4,102.08 : x
  2. Step 2: Convert to fraction form
    7,086.48/9,778.92 = 4,102.08/x
  3. Step 3: Cross multiply
    7,086.48x = 9,778.92 × 4,102.08
  4. Step 4: Simplify right side
    7,086.48x = 40,113,912.15
  5. Step 5: Solve for x
    x = 40,113,912.15/7,086.48
  6. Step 6: Final answer
    x = 5,660.63

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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.