Home / 1,811.67-2,718.88-1,325.97

Finding the Fourth Proportional to 1,811.67, 2,718.88 and 1,325.97

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Solution

The fourth proportional to 1,811.67, 2,718.88 and 1,325.97 is: 1,989.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.67 : 2,718.88 = 1,325.97 : x
  2. Step 2: Convert to fraction form
    1,811.67/2,718.88 = 1,325.97/x
  3. Step 3: Cross multiply
    1,811.67x = 2,718.88 × 1,325.97
  4. Step 4: Simplify right side
    1,811.67x = 3,605,153.31
  5. Step 5: Solve for x
    x = 3,605,153.31/1,811.67
  6. Step 6: Final answer
    x = 1,989.96

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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.