Home / 3,610.86-5,415.96-1,147.31

Finding the Fourth Proportional to 3,610.86, 5,415.96 and 1,147.31

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Solution

The fourth proportional to 3,610.86, 5,415.96 and 1,147.31 is: 1,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,610.86 : 5,415.96 = 1,147.31 : x
  2. Step 2: Convert to fraction form
    3,610.86/5,415.96 = 1,147.31/x
  3. Step 3: Cross multiply
    3,610.86x = 5,415.96 × 1,147.31
  4. Step 4: Simplify right side
    3,610.86x = 6,213,757.99
  5. Step 5: Solve for x
    x = 6,213,757.99/3,610.86
  6. Step 6: Final answer
    x = 1,720.85

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1.5x scale

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.