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Finding the Fourth Proportional to 8,545.65, 12,743.09 and 8,241.09

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Solution

The fourth proportional to 8,545.65, 12,743.09 and 8,241.09 is: 12,288.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.65 : 12,743.09 = 8,241.09 : x
  2. Step 2: Convert to fraction form
    8,545.65/12,743.09 = 8,241.09/x
  3. Step 3: Cross multiply
    8,545.65x = 12,743.09 × 8,241.09
  4. Step 4: Simplify right side
    8,545.65x = 105,016,910.36
  5. Step 5: Solve for x
    x = 105,016,910.36/8,545.65
  6. Step 6: Final answer
    x = 12,288.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.