Home / 3,433.60-5,150.40-2,121.40

Finding the Fourth Proportional to 3,433.60, 5,150.40 and 2,121.40

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Solution

The fourth proportional to 3,433.60, 5,150.40 and 2,121.40 is: 3,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,433.60 : 5,150.40 = 2,121.40 : x
  2. Step 2: Convert to fraction form
    3,433.60/5,150.40 = 2,121.40/x
  3. Step 3: Cross multiply
    3,433.60x = 5,150.40 × 2,121.40
  4. Step 4: Simplify right side
    3,433.60x = 10,926,058.56
  5. Step 5: Solve for x
    x = 10,926,058.56/3,433.60
  6. Step 6: Final answer
    x = 3,182.10

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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.