Home / 3,149.28-4,344.48-2,101.68

Finding the Fourth Proportional to 3,149.28, 4,344.48 and 2,101.68

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Solution

The fourth proportional to 3,149.28, 4,344.48 and 2,101.68 is: 2,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.28 : 4,344.48 = 2,101.68 : x
  2. Step 2: Convert to fraction form
    3,149.28/4,344.48 = 2,101.68/x
  3. Step 3: Cross multiply
    3,149.28x = 4,344.48 × 2,101.68
  4. Step 4: Simplify right side
    3,149.28x = 9,130,706.73
  5. Step 5: Solve for x
    x = 9,130,706.73/3,149.28
  6. Step 6: Final answer
    x = 2,899.30

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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.