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Finding the Fourth Proportional to 6,963.72, 9,609.90 and 3,819.84

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Solution

The fourth proportional to 6,963.72, 9,609.90 and 3,819.84 is: 5,271.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,963.72 : 9,609.90 = 3,819.84 : x
  2. Step 2: Convert to fraction form
    6,963.72/9,609.90 = 3,819.84/x
  3. Step 3: Cross multiply
    6,963.72x = 9,609.90 × 3,819.84
  4. Step 4: Simplify right side
    6,963.72x = 36,708,280.42
  5. Step 5: Solve for x
    x = 36,708,280.42/6,963.72
  6. Step 6: Final answer
    x = 5,271.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.