Home / 2,720.28-4,080.18-1,076.40

Finding the Fourth Proportional to 2,720.28, 4,080.18 and 1,076.40

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Solution

The fourth proportional to 2,720.28, 4,080.18 and 1,076.40 is: 1,614.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.28 : 4,080.18 = 1,076.40 : x
  2. Step 2: Convert to fraction form
    2,720.28/4,080.18 = 1,076.40/x
  3. Step 3: Cross multiply
    2,720.28x = 4,080.18 × 1,076.40
  4. Step 4: Simplify right side
    2,720.28x = 4,391,905.75
  5. Step 5: Solve for x
    x = 4,391,905.75/2,720.28
  6. Step 6: Final answer
    x = 1,614.51

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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.