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Finding the Fourth Proportional to 8,473.09, 12,709.80 and 3,210.58

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Solution

The fourth proportional to 8,473.09, 12,709.80 and 3,210.58 is: 4,815.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,473.09 : 12,709.80 = 3,210.58 : x
  2. Step 2: Convert to fraction form
    8,473.09/12,709.80 = 3,210.58/x
  3. Step 3: Cross multiply
    8,473.09x = 12,709.80 × 3,210.58
  4. Step 4: Simplify right side
    8,473.09x = 40,805,829.68
  5. Step 5: Solve for x
    x = 40,805,829.68/8,473.09
  6. Step 6: Final answer
    x = 4,815.93

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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.