Home / 3,481.20-5,219.72-1,402.16

Finding the Fourth Proportional to 3,481.20, 5,219.72 and 1,402.16

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Solution

The fourth proportional to 3,481.20, 5,219.72 and 1,402.16 is: 2,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.20 : 5,219.72 = 1,402.16 : x
  2. Step 2: Convert to fraction form
    3,481.20/5,219.72 = 1,402.16/x
  3. Step 3: Cross multiply
    3,481.20x = 5,219.72 × 1,402.16
  4. Step 4: Simplify right side
    3,481.20x = 7,318,882.60
  5. Step 5: Solve for x
    x = 7,318,882.60/3,481.20
  6. Step 6: Final answer
    x = 2,102.40

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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.