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Finding the Fourth Proportional to 2,091.46, 3,135.27 and 722.50

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Solution

The fourth proportional to 2,091.46, 3,135.27 and 722.50 is: 1,083.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.46 : 3,135.27 = 722.50 : x
  2. Step 2: Convert to fraction form
    2,091.46/3,135.27 = 722.50/x
  3. Step 3: Cross multiply
    2,091.46x = 3,135.27 × 722.50
  4. Step 4: Simplify right side
    2,091.46x = 2,265,232.58
  5. Step 5: Solve for x
    x = 2,265,232.58/2,091.46
  6. Step 6: Final answer
    x = 1,083.09

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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.