Home / 1,836.12-2,754.59-911.91

Finding the Fourth Proportional to 1,836.12, 2,754.59 and 911.91

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Solution

The fourth proportional to 1,836.12, 2,754.59 and 911.91 is: 1,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836.12 : 2,754.59 = 911.91 : x
  2. Step 2: Convert to fraction form
    1,836.12/2,754.59 = 911.91/x
  3. Step 3: Cross multiply
    1,836.12x = 2,754.59 × 911.91
  4. Step 4: Simplify right side
    1,836.12x = 2,511,938.17
  5. Step 5: Solve for x
    x = 2,511,938.17/1,836.12
  6. Step 6: Final answer
    x = 1,368.07

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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.