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Finding the Fourth Proportional to 7,092.74, 9,788.64 and 3,949.40

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Solution

The fourth proportional to 7,092.74, 9,788.64 and 3,949.40 is: 5,450.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,092.74 : 9,788.64 = 3,949.40 : x
  2. Step 2: Convert to fraction form
    7,092.74/9,788.64 = 3,949.40/x
  3. Step 3: Cross multiply
    7,092.74x = 9,788.64 × 3,949.40
  4. Step 4: Simplify right side
    7,092.74x = 38,659,254.82
  5. Step 5: Solve for x
    x = 38,659,254.82/7,092.74
  6. Step 6: Final answer
    x = 5,450.54

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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.