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Finding the Fourth Proportional to 6,781.51, 10,171.23 and 1,851.55

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Solution

The fourth proportional to 6,781.51, 10,171.23 and 1,851.55 is: 2,777.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.51 : 10,171.23 = 1,851.55 : x
  2. Step 2: Convert to fraction form
    6,781.51/10,171.23 = 1,851.55/x
  3. Step 3: Cross multiply
    6,781.51x = 10,171.23 × 1,851.55
  4. Step 4: Simplify right side
    6,781.51x = 18,832,540.91
  5. Step 5: Solve for x
    x = 18,832,540.91/6,781.51
  6. Step 6: Final answer
    x = 2,777.04

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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.