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Finding the Fourth Proportional to 4,545.72, 6,819.88 and 1,911.88

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Solution

The fourth proportional to 4,545.72, 6,819.88 and 1,911.88 is: 2,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,545.72 : 6,819.88 = 1,911.88 : x
  2. Step 2: Convert to fraction form
    4,545.72/6,819.88 = 1,911.88/x
  3. Step 3: Cross multiply
    4,545.72x = 6,819.88 × 1,911.88
  4. Step 4: Simplify right side
    4,545.72x = 13,038,792.17
  5. Step 5: Solve for x
    x = 13,038,792.17/4,545.72
  6. Step 6: Final answer
    x = 2,868.37

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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.