Home / 3,771.48-5,651.40-1,919.76

Finding the Fourth Proportional to 3,771.48, 5,651.40 and 1,919.76

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Solution

The fourth proportional to 3,771.48, 5,651.40 and 1,919.76 is: 2,876.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.48 : 5,651.40 = 1,919.76 : x
  2. Step 2: Convert to fraction form
    3,771.48/5,651.40 = 1,919.76/x
  3. Step 3: Cross multiply
    3,771.48x = 5,651.40 × 1,919.76
  4. Step 4: Simplify right side
    3,771.48x = 10,849,331.66
  5. Step 5: Solve for x
    x = 10,849,331.66/3,771.48
  6. Step 6: Final answer
    x = 2,876.68

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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.