Home / 3,157.78-4,355.49-2,108.02

Finding the Fourth Proportional to 3,157.78, 4,355.49 and 2,108.02

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Solution

The fourth proportional to 3,157.78, 4,355.49 and 2,108.02 is: 2,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.78 : 4,355.49 = 2,108.02 : x
  2. Step 2: Convert to fraction form
    3,157.78/4,355.49 = 2,108.02/x
  3. Step 3: Cross multiply
    3,157.78x = 4,355.49 × 2,108.02
  4. Step 4: Simplify right side
    3,157.78x = 9,181,460.03
  5. Step 5: Solve for x
    x = 9,181,460.03/3,157.78
  6. Step 6: Final answer
    x = 2,907.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.