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Finding the Fourth Proportional to 3,889.35, 5,332.27 and 3,819.40

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Solution

The fourth proportional to 3,889.35, 5,332.27 and 3,819.40 is: 5,236.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.35 : 5,332.27 = 3,819.40 : x
  2. Step 2: Convert to fraction form
    3,889.35/5,332.27 = 3,819.40/x
  3. Step 3: Cross multiply
    3,889.35x = 5,332.27 × 3,819.40
  4. Step 4: Simplify right side
    3,889.35x = 20,366,072.04
  5. Step 5: Solve for x
    x = 20,366,072.04/3,889.35
  6. Step 6: Final answer
    x = 5,236.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.