Home / 2,720.81-4,080.60-1,077.72

Finding the Fourth Proportional to 2,720.81, 4,080.60 and 1,077.72

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Solution

The fourth proportional to 2,720.81, 4,080.60 and 1,077.72 is: 1,616.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.81 : 4,080.60 = 1,077.72 : x
  2. Step 2: Convert to fraction form
    2,720.81/4,080.60 = 1,077.72/x
  3. Step 3: Cross multiply
    2,720.81x = 4,080.60 × 1,077.72
  4. Step 4: Simplify right side
    2,720.81x = 4,397,744.23
  5. Step 5: Solve for x
    x = 4,397,744.23/2,720.81
  6. Step 6: Final answer
    x = 1,616.34

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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.