Home / 3,157.24-4,735.68-965.78

Finding the Fourth Proportional to 3,157.24, 4,735.68 and 965.78

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Solution

The fourth proportional to 3,157.24, 4,735.68 and 965.78 is: 1,448.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.24 : 4,735.68 = 965.78 : x
  2. Step 2: Convert to fraction form
    3,157.24/4,735.68 = 965.78/x
  3. Step 3: Cross multiply
    3,157.24x = 4,735.68 × 965.78
  4. Step 4: Simplify right side
    3,157.24x = 4,573,625.03
  5. Step 5: Solve for x
    x = 4,573,625.03/3,157.24
  6. Step 6: Final answer
    x = 1,448.61

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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.