Home / 2,040.28-3,052.20-1,389.64

Finding the Fourth Proportional to 2,040.28, 3,052.20 and 1,389.64

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Solution

The fourth proportional to 2,040.28, 3,052.20 and 1,389.64 is: 2,078.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.28 : 3,052.20 = 1,389.64 : x
  2. Step 2: Convert to fraction form
    2,040.28/3,052.20 = 1,389.64/x
  3. Step 3: Cross multiply
    2,040.28x = 3,052.20 × 1,389.64
  4. Step 4: Simplify right side
    2,040.28x = 4,241,459.21
  5. Step 5: Solve for x
    x = 4,241,459.21/2,040.28
  6. Step 6: Final answer
    x = 2,078.86

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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.