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Finding the Fourth Proportional to 8,545.90, 12,820.02 and 2,703.28

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Solution

The fourth proportional to 8,545.90, 12,820.02 and 2,703.28 is: 4,055.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.90 : 12,820.02 = 2,703.28 : x
  2. Step 2: Convert to fraction form
    8,545.90/12,820.02 = 2,703.28/x
  3. Step 3: Cross multiply
    8,545.90x = 12,820.02 × 2,703.28
  4. Step 4: Simplify right side
    8,545.90x = 34,656,103.67
  5. Step 5: Solve for x
    x = 34,656,103.67/8,545.90
  6. Step 6: Final answer
    x = 4,055.29

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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.