Home / 2,720.56-4,078.53-1,078.26

Finding the Fourth Proportional to 2,720.56, 4,078.53 and 1,078.26

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Solution

The fourth proportional to 2,720.56, 4,078.53 and 1,078.26 is: 1,616.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.56 : 4,078.53 = 1,078.26 : x
  2. Step 2: Convert to fraction form
    2,720.56/4,078.53 = 1,078.26/x
  3. Step 3: Cross multiply
    2,720.56x = 4,078.53 × 1,078.26
  4. Step 4: Simplify right side
    2,720.56x = 4,397,715.76
  5. Step 5: Solve for x
    x = 4,397,715.76/2,720.56
  6. Step 6: Final answer
    x = 1,616.47

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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.