Home / 3,851.62-5,315.80-2,280.22

Finding the Fourth Proportional to 3,851.62, 5,315.80 and 2,280.22

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Solution

The fourth proportional to 3,851.62, 5,315.80 and 2,280.22 is: 3,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.62 : 5,315.80 = 2,280.22 : x
  2. Step 2: Convert to fraction form
    3,851.62/5,315.80 = 2,280.22/x
  3. Step 3: Cross multiply
    3,851.62x = 5,315.80 × 2,280.22
  4. Step 4: Simplify right side
    3,851.62x = 12,121,193.48
  5. Step 5: Solve for x
    x = 12,121,193.48/3,851.62
  6. Step 6: Final answer
    x = 3,147.04

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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.