Home / 2,656.12-3,981.98-1,268.76

Finding the Fourth Proportional to 2,656.12, 3,981.98 and 1,268.76

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Solution

The fourth proportional to 2,656.12, 3,981.98 and 1,268.76 is: 1,902.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.12 : 3,981.98 = 1,268.76 : x
  2. Step 2: Convert to fraction form
    2,656.12/3,981.98 = 1,268.76/x
  3. Step 3: Cross multiply
    2,656.12x = 3,981.98 × 1,268.76
  4. Step 4: Simplify right side
    2,656.12x = 5,052,176.94
  5. Step 5: Solve for x
    x = 5,052,176.94/2,656.12
  6. Step 6: Final answer
    x = 1,902.09

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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.