Home / 1,731.88-2,388.90-1,511.38

Finding the Fourth Proportional to 1,731.88, 2,388.90 and 1,511.38

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Solution

The fourth proportional to 1,731.88, 2,388.90 and 1,511.38 is: 2,084.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.88 : 2,388.90 = 1,511.38 : x
  2. Step 2: Convert to fraction form
    1,731.88/2,388.90 = 1,511.38/x
  3. Step 3: Cross multiply
    1,731.88x = 2,388.90 × 1,511.38
  4. Step 4: Simplify right side
    1,731.88x = 3,610,535.68
  5. Step 5: Solve for x
    x = 3,610,535.68/1,731.88
  6. Step 6: Final answer
    x = 2,084.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.