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Finding the Fourth Proportional to 3,159.36, 4,738.32 and 851.04

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Solution

The fourth proportional to 3,159.36, 4,738.32 and 851.04 is: 1,276.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.36 : 4,738.32 = 851.04 : x
  2. Step 2: Convert to fraction form
    3,159.36/4,738.32 = 851.04/x
  3. Step 3: Cross multiply
    3,159.36x = 4,738.32 × 851.04
  4. Step 4: Simplify right side
    3,159.36x = 4,032,499.85
  5. Step 5: Solve for x
    x = 4,032,499.85/3,159.36
  6. Step 6: Final answer
    x = 1,276.37

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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.