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Finding the Fourth Proportional to 7,999.50, 11,039.28 and 4,462.50

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Solution

The fourth proportional to 7,999.50, 11,039.28 and 4,462.50 is: 6,158.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.50 : 11,039.28 = 4,462.50 : x
  2. Step 2: Convert to fraction form
    7,999.50/11,039.28 = 4,462.50/x
  3. Step 3: Cross multiply
    7,999.50x = 11,039.28 × 4,462.50
  4. Step 4: Simplify right side
    7,999.50x = 49,262,787
  5. Step 5: Solve for x
    x = 49,262,787/7,999.50
  6. Step 6: Final answer
    x = 6,158.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.