Home / 3,421.44-5,127.84-2,851.20

Finding the Fourth Proportional to 3,421.44, 5,127.84 and 2,851.20

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Solution

The fourth proportional to 3,421.44, 5,127.84 and 2,851.20 is: 4,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.44 : 5,127.84 = 2,851.20 : x
  2. Step 2: Convert to fraction form
    3,421.44/5,127.84 = 2,851.20/x
  3. Step 3: Cross multiply
    3,421.44x = 5,127.84 × 2,851.20
  4. Step 4: Simplify right side
    3,421.44x = 14,620,497.41
  5. Step 5: Solve for x
    x = 14,620,497.41/3,421.44
  6. Step 6: Final answer
    x = 4,273.20

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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.