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Finding the Fourth Proportional to 7,999.25, 11,981.54 and 5,803.13

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Solution

The fourth proportional to 7,999.25, 11,981.54 and 5,803.13 is: 8,692.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.25 : 11,981.54 = 5,803.13 : x
  2. Step 2: Convert to fraction form
    7,999.25/11,981.54 = 5,803.13/x
  3. Step 3: Cross multiply
    7,999.25x = 11,981.54 × 5,803.13
  4. Step 4: Simplify right side
    7,999.25x = 69,530,345.30
  5. Step 5: Solve for x
    x = 69,530,345.30/7,999.25
  6. Step 6: Final answer
    x = 8,692.11

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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.