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Finding the Fourth Proportional to 4,668.80, 6,999.71 and 2,819.49

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Solution

The fourth proportional to 4,668.80, 6,999.71 and 2,819.49 is: 4,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,668.80 : 6,999.71 = 2,819.49 : x
  2. Step 2: Convert to fraction form
    4,668.80/6,999.71 = 2,819.49/x
  3. Step 3: Cross multiply
    4,668.80x = 6,999.71 × 2,819.49
  4. Step 4: Simplify right side
    4,668.80x = 19,735,598.25
  5. Step 5: Solve for x
    x = 19,735,598.25/4,668.80
  6. Step 6: Final answer
    x = 4,227.13

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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.