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Finding the Fourth Proportional to 2,788.92, 4,178.96 and 2,266.40

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Solution

The fourth proportional to 2,788.92, 4,178.96 and 2,266.40 is: 3,396.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.92 : 4,178.96 = 2,266.40 : x
  2. Step 2: Convert to fraction form
    2,788.92/4,178.96 = 2,266.40/x
  3. Step 3: Cross multiply
    2,788.92x = 4,178.96 × 2,266.40
  4. Step 4: Simplify right side
    2,788.92x = 9,471,194.94
  5. Step 5: Solve for x
    x = 9,471,194.94/2,788.92
  6. Step 6: Final answer
    x = 3,396.01

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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.