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Finding the Fourth Proportional to 5,289.40, 7,934.10 and 2,168.82

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Solution

The fourth proportional to 5,289.40, 7,934.10 and 2,168.82 is: 3,253.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.40 : 7,934.10 = 2,168.82 : x
  2. Step 2: Convert to fraction form
    5,289.40/7,934.10 = 2,168.82/x
  3. Step 3: Cross multiply
    5,289.40x = 7,934.10 × 2,168.82
  4. Step 4: Simplify right side
    5,289.40x = 17,207,634.76
  5. Step 5: Solve for x
    x = 17,207,634.76/5,289.40
  6. Step 6: Final answer
    x = 3,253.23

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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.