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Finding the Fourth Proportional to 7,841.92, 11,762.32 and 1,998.56

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Solution

The fourth proportional to 7,841.92, 11,762.32 and 1,998.56 is: 2,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.92 : 11,762.32 = 1,998.56 : x
  2. Step 2: Convert to fraction form
    7,841.92/11,762.32 = 1,998.56/x
  3. Step 3: Cross multiply
    7,841.92x = 11,762.32 × 1,998.56
  4. Step 4: Simplify right side
    7,841.92x = 23,507,702.26
  5. Step 5: Solve for x
    x = 23,507,702.26/7,841.92
  6. Step 6: Final answer
    x = 2,997.70

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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.