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Finding the Fourth Proportional to 3,159.20, 4,738.80 and 968.27

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Solution

The fourth proportional to 3,159.20, 4,738.80 and 968.27 is: 1,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.20 : 4,738.80 = 968.27 : x
  2. Step 2: Convert to fraction form
    3,159.20/4,738.80 = 968.27/x
  3. Step 3: Cross multiply
    3,159.20x = 4,738.80 × 968.27
  4. Step 4: Simplify right side
    3,159.20x = 4,588,414.18
  5. Step 5: Solve for x
    x = 4,588,414.18/3,159.20
  6. Step 6: Final answer
    x = 1,452.40

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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.