Home / 6,781.69-10,172.40-1,851.76

Finding the Fourth Proportional to 6,781.69, 10,172.40 and 1,851.76

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Solution

The fourth proportional to 6,781.69, 10,172.40 and 1,851.76 is: 2,777.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.69 : 10,172.40 = 1,851.76 : x
  2. Step 2: Convert to fraction form
    6,781.69/10,172.40 = 1,851.76/x
  3. Step 3: Cross multiply
    6,781.69x = 10,172.40 × 1,851.76
  4. Step 4: Simplify right side
    6,781.69x = 18,836,843.42
  5. Step 5: Solve for x
    x = 18,836,843.42/6,781.69
  6. Step 6: Final answer
    x = 2,777.60

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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.