Home / 2,431.28-3,351.72-2,009.84

Finding the Fourth Proportional to 2,431.28, 3,351.72 and 2,009.84

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Solution

The fourth proportional to 2,431.28, 3,351.72 and 2,009.84 is: 2,770.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.28 : 3,351.72 = 2,009.84 : x
  2. Step 2: Convert to fraction form
    2,431.28/3,351.72 = 2,009.84/x
  3. Step 3: Cross multiply
    2,431.28x = 3,351.72 × 2,009.84
  4. Step 4: Simplify right side
    2,431.28x = 6,736,420.92
  5. Step 5: Solve for x
    x = 6,736,420.92/2,431.28
  6. Step 6: Final answer
    x = 2,770.73

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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.