Home / 6,781.82-10,172.59-1,851.89

Finding the Fourth Proportional to 6,781.82, 10,172.59 and 1,851.89

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Solution

The fourth proportional to 6,781.82, 10,172.59 and 1,851.89 is: 2,777.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.82 : 10,172.59 = 1,851.89 : x
  2. Step 2: Convert to fraction form
    6,781.82/10,172.59 = 1,851.89/x
  3. Step 3: Cross multiply
    6,781.82x = 10,172.59 × 1,851.89
  4. Step 4: Simplify right side
    6,781.82x = 18,838,462.20
  5. Step 5: Solve for x
    x = 18,838,462.20/6,781.82
  6. Step 6: Final answer
    x = 2,777.79

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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.