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Finding the Fourth Proportional to 3,157.52, 4,735.36 and 965.76

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Solution

The fourth proportional to 3,157.52, 4,735.36 and 965.76 is: 1,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.52 : 4,735.36 = 965.76 : x
  2. Step 2: Convert to fraction form
    3,157.52/4,735.36 = 965.76/x
  3. Step 3: Cross multiply
    3,157.52x = 4,735.36 × 965.76
  4. Step 4: Simplify right side
    3,157.52x = 4,573,221.27
  5. Step 5: Solve for x
    x = 4,573,221.27/3,157.52
  6. Step 6: Final answer
    x = 1,448.36

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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.