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Finding the Fourth Proportional to 1,823.62, 2,734.82 and 727.70

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Solution

The fourth proportional to 1,823.62, 2,734.82 and 727.70 is: 1,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,823.62 : 2,734.82 = 727.70 : x
  2. Step 2: Convert to fraction form
    1,823.62/2,734.82 = 727.70/x
  3. Step 3: Cross multiply
    1,823.62x = 2,734.82 × 727.70
  4. Step 4: Simplify right side
    1,823.62x = 1,990,128.51
  5. Step 5: Solve for x
    x = 1,990,128.51/1,823.62
  6. Step 6: Final answer
    x = 1,091.31

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1.5x scale

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.