Home / 5,077.78-7,617.14-1,380.02

Finding the Fourth Proportional to 5,077.78, 7,617.14 and 1,380.02

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Solution

The fourth proportional to 5,077.78, 7,617.14 and 1,380.02 is: 2,070.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,077.78 : 7,617.14 = 1,380.02 : x
  2. Step 2: Convert to fraction form
    5,077.78/7,617.14 = 1,380.02/x
  3. Step 3: Cross multiply
    5,077.78x = 7,617.14 × 1,380.02
  4. Step 4: Simplify right side
    5,077.78x = 10,511,805.54
  5. Step 5: Solve for x
    x = 10,511,805.54/5,077.78
  6. Step 6: Final answer
    x = 2,070.16

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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.