Home / 2,905.12-4,351.92-1,876

Finding the Fourth Proportional to 2,905.12, 4,351.92 and 1,876

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Solution

The fourth proportional to 2,905.12, 4,351.92 and 1,876 is: 2,810.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.12 : 4,351.92 = 1,876 : x
  2. Step 2: Convert to fraction form
    2,905.12/4,351.92 = 1,876/x
  3. Step 3: Cross multiply
    2,905.12x = 4,351.92 × 1,876
  4. Step 4: Simplify right side
    2,905.12x = 8,164,201.92
  5. Step 5: Solve for x
    x = 8,164,201.92/2,905.12
  6. Step 6: Final answer
    x = 2,810.28

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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.