Home / 2,788.20-4,187.16-2,691

Finding the Fourth Proportional to 2,788.20, 4,187.16 and 2,691

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Solution

The fourth proportional to 2,788.20, 4,187.16 and 2,691 is: 4,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.20 : 4,187.16 = 2,691 : x
  2. Step 2: Convert to fraction form
    2,788.20/4,187.16 = 2,691/x
  3. Step 3: Cross multiply
    2,788.20x = 4,187.16 × 2,691
  4. Step 4: Simplify right side
    2,788.20x = 11,267,647.56
  5. Step 5: Solve for x
    x = 11,267,647.56/2,788.20
  6. Step 6: Final answer
    x = 4,041.19

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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.