Home / 6,620.86-9,137.57-3,968.18

Finding the Fourth Proportional to 6,620.86, 9,137.57 and 3,968.18

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Solution

The fourth proportional to 6,620.86, 9,137.57 and 3,968.18 is: 5,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.86 : 9,137.57 = 3,968.18 : x
  2. Step 2: Convert to fraction form
    6,620.86/9,137.57 = 3,968.18/x
  3. Step 3: Cross multiply
    6,620.86x = 9,137.57 × 3,968.18
  4. Step 4: Simplify right side
    6,620.86x = 36,259,522.52
  5. Step 5: Solve for x
    x = 36,259,522.52/6,620.86
  6. Step 6: Final answer
    x = 5,476.56

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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.