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Finding the Fourth Proportional to 5,211.84, 7,814.88 and 1,748.16

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Solution

The fourth proportional to 5,211.84, 7,814.88 and 1,748.16 is: 2,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.84 : 7,814.88 = 1,748.16 : x
  2. Step 2: Convert to fraction form
    5,211.84/7,814.88 = 1,748.16/x
  3. Step 3: Cross multiply
    5,211.84x = 7,814.88 × 1,748.16
  4. Step 4: Simplify right side
    5,211.84x = 13,661,660.62
  5. Step 5: Solve for x
    x = 13,661,660.62/5,211.84
  6. Step 6: Final answer
    x = 2,621.27

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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.