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Finding the Fourth Proportional to 5,663.76, 8,493.54 and 1,965

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Solution

The fourth proportional to 5,663.76, 8,493.54 and 1,965 is: 2,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,663.76 : 8,493.54 = 1,965 : x
  2. Step 2: Convert to fraction form
    5,663.76/8,493.54 = 1,965/x
  3. Step 3: Cross multiply
    5,663.76x = 8,493.54 × 1,965
  4. Step 4: Simplify right side
    5,663.76x = 16,689,806.10
  5. Step 5: Solve for x
    x = 16,689,806.10/5,663.76
  6. Step 6: Final answer
    x = 2,946.77

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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.