Home / 6,990.11-9,636.44-4,997.20

Finding the Fourth Proportional to 6,990.11, 9,636.44 and 4,997.20

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Solution

The fourth proportional to 6,990.11, 9,636.44 and 4,997.20 is: 6,889.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.11 : 9,636.44 = 4,997.20 : x
  2. Step 2: Convert to fraction form
    6,990.11/9,636.44 = 4,997.20/x
  3. Step 3: Cross multiply
    6,990.11x = 9,636.44 × 4,997.20
  4. Step 4: Simplify right side
    6,990.11x = 48,155,144.80
  5. Step 5: Solve for x
    x = 48,155,144.80/6,990.11
  6. Step 6: Final answer
    x = 6,889.04

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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.