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Finding the Fourth Proportional to 6,963.64, 9,609.84 and 3,819.76

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Solution

The fourth proportional to 6,963.64, 9,609.84 and 3,819.76 is: 5,271.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,963.64 : 9,609.84 = 3,819.76 : x
  2. Step 2: Convert to fraction form
    6,963.64/9,609.84 = 3,819.76/x
  3. Step 3: Cross multiply
    6,963.64x = 9,609.84 × 3,819.76
  4. Step 4: Simplify right side
    6,963.64x = 36,707,282.44
  5. Step 5: Solve for x
    x = 36,707,282.44/6,963.64
  6. Step 6: Final answer
    x = 5,271.28

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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.