Home / 8,191.36-12,287.68-2,997.12

Finding the Fourth Proportional to 8,191.36, 12,287.68 and 2,997.12

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Solution

The fourth proportional to 8,191.36, 12,287.68 and 2,997.12 is: 4,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.36 : 12,287.68 = 2,997.12 : x
  2. Step 2: Convert to fraction form
    8,191.36/12,287.68 = 2,997.12/x
  3. Step 3: Cross multiply
    8,191.36x = 12,287.68 × 2,997.12
  4. Step 4: Simplify right side
    8,191.36x = 36,827,651.48
  5. Step 5: Solve for x
    x = 36,827,651.48/8,191.36
  6. Step 6: Final answer
    x = 4,495.91

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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.