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Finding the Fourth Proportional to 8,369.66, 12,545.73 and 2,821.10

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Solution

The fourth proportional to 8,369.66, 12,545.73 and 2,821.10 is: 4,228.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.66 : 12,545.73 = 2,821.10 : x
  2. Step 2: Convert to fraction form
    8,369.66/12,545.73 = 2,821.10/x
  3. Step 3: Cross multiply
    8,369.66x = 12,545.73 × 2,821.10
  4. Step 4: Simplify right side
    8,369.66x = 35,392,696.17
  5. Step 5: Solve for x
    x = 35,392,696.17/8,369.66
  6. Step 6: Final answer
    x = 4,228.69

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1.5x scale

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.