Home / 7,999.20-11,975.10-5,928.50

Finding the Fourth Proportional to 7,999.20, 11,975.10 and 5,928.50

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Solution

The fourth proportional to 7,999.20, 11,975.10 and 5,928.50 is: 8,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.20 : 11,975.10 = 5,928.50 : x
  2. Step 2: Convert to fraction form
    7,999.20/11,975.10 = 5,928.50/x
  3. Step 3: Cross multiply
    7,999.20x = 11,975.10 × 5,928.50
  4. Step 4: Simplify right side
    7,999.20x = 70,994,380.35
  5. Step 5: Solve for x
    x = 70,994,380.35/7,999.20
  6. Step 6: Final answer
    x = 8,875.19

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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.