Home / 7,990.20-11,971.94-5,646.32

Finding the Fourth Proportional to 7,990.20, 11,971.94 and 5,646.32

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Solution

The fourth proportional to 7,990.20, 11,971.94 and 5,646.32 is: 8,460.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.20 : 11,971.94 = 5,646.32 : x
  2. Step 2: Convert to fraction form
    7,990.20/11,971.94 = 5,646.32/x
  3. Step 3: Cross multiply
    7,990.20x = 11,971.94 × 5,646.32
  4. Step 4: Simplify right side
    7,990.20x = 67,597,404.26
  5. Step 5: Solve for x
    x = 67,597,404.26/7,990.20
  6. Step 6: Final answer
    x = 8,460.04

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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.