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Finding the Fourth Proportional to 7,991.85, 11,994.05 and 5,543.89

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Solution

The fourth proportional to 7,991.85, 11,994.05 and 5,543.89 is: 8,320.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.85 : 11,994.05 = 5,543.89 : x
  2. Step 2: Convert to fraction form
    7,991.85/11,994.05 = 5,543.89/x
  3. Step 3: Cross multiply
    7,991.85x = 11,994.05 × 5,543.89
  4. Step 4: Simplify right side
    7,991.85x = 66,493,666.14
  5. Step 5: Solve for x
    x = 66,493,666.14/7,991.85
  6. Step 6: Final answer
    x = 8,320.19

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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.