Home / 3,460.64-5,190.96-1,120.55

Finding the Fourth Proportional to 3,460.64, 5,190.96 and 1,120.55

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Solution

The fourth proportional to 3,460.64, 5,190.96 and 1,120.55 is: 1,680.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.64 : 5,190.96 = 1,120.55 : x
  2. Step 2: Convert to fraction form
    3,460.64/5,190.96 = 1,120.55/x
  3. Step 3: Cross multiply
    3,460.64x = 5,190.96 × 1,120.55
  4. Step 4: Simplify right side
    3,460.64x = 5,816,704.27
  5. Step 5: Solve for x
    x = 5,816,704.27/3,460.64
  6. Step 6: Final answer
    x = 1,680.82

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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.