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Finding the Fourth Proportional to 5,663.72, 8,495.53 and 3,990.97

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Solution

The fourth proportional to 5,663.72, 8,495.53 and 3,990.97 is: 5,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,663.72 : 8,495.53 = 3,990.97 : x
  2. Step 2: Convert to fraction form
    5,663.72/8,495.53 = 3,990.97/x
  3. Step 3: Cross multiply
    5,663.72x = 8,495.53 × 3,990.97
  4. Step 4: Simplify right side
    5,663.72x = 33,905,342.93
  5. Step 5: Solve for x
    x = 33,905,342.93/5,663.72
  6. Step 6: Final answer
    x = 5,986.41

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1.5x scale

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.