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Finding the Fourth Proportional to 2,676.86, 4,016.10 and 1,215.62

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Solution

The fourth proportional to 2,676.86, 4,016.10 and 1,215.62 is: 1,823.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,676.86 : 4,016.10 = 1,215.62 : x
  2. Step 2: Convert to fraction form
    2,676.86/4,016.10 = 1,215.62/x
  3. Step 3: Cross multiply
    2,676.86x = 4,016.10 × 1,215.62
  4. Step 4: Simplify right side
    2,676.86x = 4,882,051.48
  5. Step 5: Solve for x
    x = 4,882,051.48/2,676.86
  6. Step 6: Final answer
    x = 1,823.80

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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.