Home / 2,788.70-4,183.72-1,398.58

Finding the Fourth Proportional to 2,788.70, 4,183.72 and 1,398.58

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Solution

The fourth proportional to 2,788.70, 4,183.72 and 1,398.58 is: 2,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.70 : 4,183.72 = 1,398.58 : x
  2. Step 2: Convert to fraction form
    2,788.70/4,183.72 = 1,398.58/x
  3. Step 3: Cross multiply
    2,788.70x = 4,183.72 × 1,398.58
  4. Step 4: Simplify right side
    2,788.70x = 5,851,253.16
  5. Step 5: Solve for x
    x = 5,851,253.16/2,788.70
  6. Step 6: Final answer
    x = 2,098.20

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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.