Home / 3,851.68-5,316.19-3,221.11

Finding the Fourth Proportional to 3,851.68, 5,316.19 and 3,221.11

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Solution

The fourth proportional to 3,851.68, 5,316.19 and 3,221.11 is: 4,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.68 : 5,316.19 = 3,221.11 : x
  2. Step 2: Convert to fraction form
    3,851.68/5,316.19 = 3,221.11/x
  3. Step 3: Cross multiply
    3,851.68x = 5,316.19 × 3,221.11
  4. Step 4: Simplify right side
    3,851.68x = 17,124,024.72
  5. Step 5: Solve for x
    x = 17,124,024.72/3,851.68
  6. Step 6: Final answer
    x = 4,445.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.