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Finding the Fourth Proportional to 8,545.50, 12,818.25 and 2,389.50

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Solution

The fourth proportional to 8,545.50, 12,818.25 and 2,389.50 is: 3,584.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.50 : 12,818.25 = 2,389.50 : x
  2. Step 2: Convert to fraction form
    8,545.50/12,818.25 = 2,389.50/x
  3. Step 3: Cross multiply
    8,545.50x = 12,818.25 × 2,389.50
  4. Step 4: Simplify right side
    8,545.50x = 30,629,208.38
  5. Step 5: Solve for x
    x = 30,629,208.38/8,545.50
  6. Step 6: Final answer
    x = 3,584.25

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Double scale
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Similar ratio
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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.