Home / 3,129.44-4,318.92-1,732.64

Finding the Fourth Proportional to 3,129.44, 4,318.92 and 1,732.64

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Solution

The fourth proportional to 3,129.44, 4,318.92 and 1,732.64 is: 2,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.44 : 4,318.92 = 1,732.64 : x
  2. Step 2: Convert to fraction form
    3,129.44/4,318.92 = 1,732.64/x
  3. Step 3: Cross multiply
    3,129.44x = 4,318.92 × 1,732.64
  4. Step 4: Simplify right side
    3,129.44x = 7,483,133.55
  5. Step 5: Solve for x
    x = 7,483,133.55/3,129.44
  6. Step 6: Final answer
    x = 2,391.21

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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.