Home / 2,178.64-3,260.66-1,788.62

Finding the Fourth Proportional to 2,178.64, 3,260.66 and 1,788.62

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Solution

The fourth proportional to 2,178.64, 3,260.66 and 1,788.62 is: 2,676.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.64 : 3,260.66 = 1,788.62 : x
  2. Step 2: Convert to fraction form
    2,178.64/3,260.66 = 1,788.62/x
  3. Step 3: Cross multiply
    2,178.64x = 3,260.66 × 1,788.62
  4. Step 4: Simplify right side
    2,178.64x = 5,832,081.69
  5. Step 5: Solve for x
    x = 5,832,081.69/2,178.64
  6. Step 6: Final answer
    x = 2,676.94

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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.