Home / 3,416.40-5,120.34-1,222.72

Finding the Fourth Proportional to 3,416.40, 5,120.34 and 1,222.72

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Solution

The fourth proportional to 3,416.40, 5,120.34 and 1,222.72 is: 1,832.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,416.40 : 5,120.34 = 1,222.72 : x
  2. Step 2: Convert to fraction form
    3,416.40/5,120.34 = 1,222.72/x
  3. Step 3: Cross multiply
    3,416.40x = 5,120.34 × 1,222.72
  4. Step 4: Simplify right side
    3,416.40x = 6,260,742.12
  5. Step 5: Solve for x
    x = 6,260,742.12/3,416.40
  6. Step 6: Final answer
    x = 1,832.56

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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.