Home / 3,877.11-5,814.75-1,378.11

Finding the Fourth Proportional to 3,877.11, 5,814.75 and 1,378.11

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Solution

The fourth proportional to 3,877.11, 5,814.75 and 1,378.11 is: 2,066.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.11 : 5,814.75 = 1,378.11 : x
  2. Step 2: Convert to fraction form
    3,877.11/5,814.75 = 1,378.11/x
  3. Step 3: Cross multiply
    3,877.11x = 5,814.75 × 1,378.11
  4. Step 4: Simplify right side
    3,877.11x = 8,013,365.12
  5. Step 5: Solve for x
    x = 8,013,365.12/3,877.11
  6. Step 6: Final answer
    x = 2,066.84

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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.