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Finding the Fourth Proportional to 2,788.43, 4,189.19 and 2,630.82

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Solution

The fourth proportional to 2,788.43, 4,189.19 and 2,630.82 is: 3,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.43 : 4,189.19 = 2,630.82 : x
  2. Step 2: Convert to fraction form
    2,788.43/4,189.19 = 2,630.82/x
  3. Step 3: Cross multiply
    2,788.43x = 4,189.19 × 2,630.82
  4. Step 4: Simplify right side
    2,788.43x = 11,020,991.68
  5. Step 5: Solve for x
    x = 11,020,991.68/2,788.43
  6. Step 6: Final answer
    x = 3,952.40

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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.