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Finding the Fourth Proportional to 3,965.63, 5,945.10 and 1,988.83

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Solution

The fourth proportional to 3,965.63, 5,945.10 and 1,988.83 is: 2,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.63 : 5,945.10 = 1,988.83 : x
  2. Step 2: Convert to fraction form
    3,965.63/5,945.10 = 1,988.83/x
  3. Step 3: Cross multiply
    3,965.63x = 5,945.10 × 1,988.83
  4. Step 4: Simplify right side
    3,965.63x = 11,823,778.37
  5. Step 5: Solve for x
    x = 11,823,778.37/3,965.63
  6. Step 6: Final answer
    x = 2,981.56

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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.