Home / 1,813.12-2,717.64-1,081.17

Finding the Fourth Proportional to 1,813.12, 2,717.64 and 1,081.17

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Solution

The fourth proportional to 1,813.12, 2,717.64 and 1,081.17 is: 1,620.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.12 : 2,717.64 = 1,081.17 : x
  2. Step 2: Convert to fraction form
    1,813.12/2,717.64 = 1,081.17/x
  3. Step 3: Cross multiply
    1,813.12x = 2,717.64 × 1,081.17
  4. Step 4: Simplify right side
    1,813.12x = 2,938,230.84
  5. Step 5: Solve for x
    x = 2,938,230.84/1,813.12
  6. Step 6: Final answer
    x = 1,620.54

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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.