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Finding the Fourth Proportional to 8,368.83, 12,545.49 and 3,100.90

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Solution

The fourth proportional to 8,368.83, 12,545.49 and 3,100.90 is: 4,648.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.83 : 12,545.49 = 3,100.90 : x
  2. Step 2: Convert to fraction form
    8,368.83/12,545.49 = 3,100.90/x
  3. Step 3: Cross multiply
    8,368.83x = 12,545.49 × 3,100.90
  4. Step 4: Simplify right side
    8,368.83x = 38,902,341.30
  5. Step 5: Solve for x
    x = 38,902,341.30/8,368.83
  6. Step 6: Final answer
    x = 4,648.48

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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.