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Finding the Fourth Proportional to 5,213.84, 7,821.84 and 1,751

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Solution

The fourth proportional to 5,213.84, 7,821.84 and 1,751 is: 2,626.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.84 : 7,821.84 = 1,751 : x
  2. Step 2: Convert to fraction form
    5,213.84/7,821.84 = 1,751/x
  3. Step 3: Cross multiply
    5,213.84x = 7,821.84 × 1,751
  4. Step 4: Simplify right side
    5,213.84x = 13,696,041.84
  5. Step 5: Solve for x
    x = 13,696,041.84/5,213.84
  6. Step 6: Final answer
    x = 2,626.86

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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.