Home / 3,656.86-5,485.82-1,157.20

Finding the Fourth Proportional to 3,656.86, 5,485.82 and 1,157.20

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Solution

The fourth proportional to 3,656.86, 5,485.82 and 1,157.20 is: 1,735.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.86 : 5,485.82 = 1,157.20 : x
  2. Step 2: Convert to fraction form
    3,656.86/5,485.82 = 1,157.20/x
  3. Step 3: Cross multiply
    3,656.86x = 5,485.82 × 1,157.20
  4. Step 4: Simplify right side
    3,656.86x = 6,348,190.90
  5. Step 5: Solve for x
    x = 6,348,190.90/3,656.86
  6. Step 6: Final answer
    x = 1,735.97

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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.