Home / 2,720.07-4,081.05-1,077.12

Finding the Fourth Proportional to 2,720.07, 4,081.05 and 1,077.12

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Solution

The fourth proportional to 2,720.07, 4,081.05 and 1,077.12 is: 1,616.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.07 : 4,081.05 = 1,077.12 : x
  2. Step 2: Convert to fraction form
    2,720.07/4,081.05 = 1,077.12/x
  3. Step 3: Cross multiply
    2,720.07x = 4,081.05 × 1,077.12
  4. Step 4: Simplify right side
    2,720.07x = 4,395,780.58
  5. Step 5: Solve for x
    x = 4,395,780.58/2,720.07
  6. Step 6: Final answer
    x = 1,616.05

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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.