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Finding the Fourth Proportional to 7,192.76, 10,789.16 and 1,998.63

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Solution

The fourth proportional to 7,192.76, 10,789.16 and 1,998.63 is: 2,997.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.76 : 10,789.16 = 1,998.63 : x
  2. Step 2: Convert to fraction form
    7,192.76/10,789.16 = 1,998.63/x
  3. Step 3: Cross multiply
    7,192.76x = 10,789.16 × 1,998.63
  4. Step 4: Simplify right side
    7,192.76x = 21,563,528.86
  5. Step 5: Solve for x
    x = 21,563,528.86/7,192.76
  6. Step 6: Final answer
    x = 2,997.95

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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.