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Finding the Fourth Proportional to 8,248.48, 12,429.31 and 6,819.64

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Solution

The fourth proportional to 8,248.48, 12,429.31 and 6,819.64 is: 10,276.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,248.48 : 12,429.31 = 6,819.64 : x
  2. Step 2: Convert to fraction form
    8,248.48/12,429.31 = 6,819.64/x
  3. Step 3: Cross multiply
    8,248.48x = 12,429.31 × 6,819.64
  4. Step 4: Simplify right side
    8,248.48x = 84,763,419.65
  5. Step 5: Solve for x
    x = 84,763,419.65/8,248.48
  6. Step 6: Final answer
    x = 10,276.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.