Home / 3,878.11-5,820.81-2,030.64

Finding the Fourth Proportional to 3,878.11, 5,820.81 and 2,030.64

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Solution

The fourth proportional to 3,878.11, 5,820.81 and 2,030.64 is: 3,047.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.11 : 5,820.81 = 2,030.64 : x
  2. Step 2: Convert to fraction form
    3,878.11/5,820.81 = 2,030.64/x
  3. Step 3: Cross multiply
    3,878.11x = 5,820.81 × 2,030.64
  4. Step 4: Simplify right side
    3,878.11x = 11,819,969.62
  5. Step 5: Solve for x
    x = 11,819,969.62/3,878.11
  6. Step 6: Final answer
    x = 3,047.87

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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.