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Finding the Fourth Proportional to 2,892.75, 3,993.35 and 2,788.87

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Solution

The fourth proportional to 2,892.75, 3,993.35 and 2,788.87 is: 3,849.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,892.75 : 3,993.35 = 2,788.87 : x
  2. Step 2: Convert to fraction form
    2,892.75/3,993.35 = 2,788.87/x
  3. Step 3: Cross multiply
    2,892.75x = 3,993.35 × 2,788.87
  4. Step 4: Simplify right side
    2,892.75x = 11,136,927.65
  5. Step 5: Solve for x
    x = 11,136,927.65/2,892.75
  6. Step 6: Final answer
    x = 3,849.94

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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.