Home / 7,991.35-11,993.30-5,543.39

Finding the Fourth Proportional to 7,991.35, 11,993.30 and 5,543.39

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Solution

The fourth proportional to 7,991.35, 11,993.30 and 5,543.39 is: 8,319.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.35 : 11,993.30 = 5,543.39 : x
  2. Step 2: Convert to fraction form
    7,991.35/11,993.30 = 5,543.39/x
  3. Step 3: Cross multiply
    7,991.35x = 11,993.30 × 5,543.39
  4. Step 4: Simplify right side
    7,991.35x = 66,483,511.57
  5. Step 5: Solve for x
    x = 66,483,511.57/7,991.35
  6. Step 6: Final answer
    x = 8,319.44

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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.