Home / 7,996.86-11,990.16-3,320.10

Finding the Fourth Proportional to 7,996.86, 11,990.16 and 3,320.10

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Solution

The fourth proportional to 7,996.86, 11,990.16 and 3,320.10 is: 4,978.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,996.86 : 11,990.16 = 3,320.10 : x
  2. Step 2: Convert to fraction form
    7,996.86/11,990.16 = 3,320.10/x
  3. Step 3: Cross multiply
    7,996.86x = 11,990.16 × 3,320.10
  4. Step 4: Simplify right side
    7,996.86x = 39,808,561.08
  5. Step 5: Solve for x
    x = 39,808,561.08/7,996.86
  6. Step 6: Final answer
    x = 4,978.02

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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.