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Finding the Fourth Proportional to 7,892.01, 10,892.79 and 4,910.13

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Solution

The fourth proportional to 7,892.01, 10,892.79 and 4,910.13 is: 6,777.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.01 : 10,892.79 = 4,910.13 : x
  2. Step 2: Convert to fraction form
    7,892.01/10,892.79 = 4,910.13/x
  3. Step 3: Cross multiply
    7,892.01x = 10,892.79 × 4,910.13
  4. Step 4: Simplify right side
    7,892.01x = 53,485,014.96
  5. Step 5: Solve for x
    x = 53,485,014.96/7,892.01
  6. Step 6: Final answer
    x = 6,777.11

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1.5x scale

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.