Home / 4,080.20-5,630.63-2,311.81

Finding the Fourth Proportional to 4,080.20, 5,630.63 and 2,311.81

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Solution

The fourth proportional to 4,080.20, 5,630.63 and 2,311.81 is: 3,190.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,080.20 : 5,630.63 = 2,311.81 : x
  2. Step 2: Convert to fraction form
    4,080.20/5,630.63 = 2,311.81/x
  3. Step 3: Cross multiply
    4,080.20x = 5,630.63 × 2,311.81
  4. Step 4: Simplify right side
    4,080.20x = 13,016,921.10
  5. Step 5: Solve for x
    x = 13,016,921.10/4,080.20
  6. Step 6: Final answer
    x = 3,190.27

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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.