Home / 4,771.39-7,159.73-2,138.79

Finding the Fourth Proportional to 4,771.39, 7,159.73 and 2,138.79

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Solution

The fourth proportional to 4,771.39, 7,159.73 and 2,138.79 is: 3,209.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,771.39 : 7,159.73 = 2,138.79 : x
  2. Step 2: Convert to fraction form
    4,771.39/7,159.73 = 2,138.79/x
  3. Step 3: Cross multiply
    4,771.39x = 7,159.73 × 2,138.79
  4. Step 4: Simplify right side
    4,771.39x = 15,313,148.23
  5. Step 5: Solve for x
    x = 15,313,148.23/4,771.39
  6. Step 6: Final answer
    x = 3,209.37

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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.