Home / 3,892.12-5,838.80-1,426.40

Finding the Fourth Proportional to 3,892.12, 5,838.80 and 1,426.40

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Solution

The fourth proportional to 3,892.12, 5,838.80 and 1,426.40 is: 2,139.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.12 : 5,838.80 = 1,426.40 : x
  2. Step 2: Convert to fraction form
    3,892.12/5,838.80 = 1,426.40/x
  3. Step 3: Cross multiply
    3,892.12x = 5,838.80 × 1,426.40
  4. Step 4: Simplify right side
    3,892.12x = 8,328,464.32
  5. Step 5: Solve for x
    x = 8,328,464.32/3,892.12
  6. Step 6: Final answer
    x = 2,139.83

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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.