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Finding the Fourth Proportional to 6,668.73, 10,004.87 and 1,988.75

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Solution

The fourth proportional to 6,668.73, 10,004.87 and 1,988.75 is: 2,983.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,668.73 : 10,004.87 = 1,988.75 : x
  2. Step 2: Convert to fraction form
    6,668.73/10,004.87 = 1,988.75/x
  3. Step 3: Cross multiply
    6,668.73x = 10,004.87 × 1,988.75
  4. Step 4: Simplify right side
    6,668.73x = 19,897,204.01
  5. Step 5: Solve for x
    x = 19,897,204.01/6,668.73
  6. Step 6: Final answer
    x = 2,983.66

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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.