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Finding the Fourth Proportional to 7,920.73, 10,923.87 and 4,892.19

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Solution

The fourth proportional to 7,920.73, 10,923.87 and 4,892.19 is: 6,747.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.73 : 10,923.87 = 4,892.19 : x
  2. Step 2: Convert to fraction form
    7,920.73/10,923.87 = 4,892.19/x
  3. Step 3: Cross multiply
    7,920.73x = 10,923.87 × 4,892.19
  4. Step 4: Simplify right side
    7,920.73x = 53,441,647.58
  5. Step 5: Solve for x
    x = 53,441,647.58/7,920.73
  6. Step 6: Final answer
    x = 6,747.06

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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.