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Finding the Fourth Proportional to 6,763.52, 10,119.76 and 3,991.70

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Solution

The fourth proportional to 6,763.52, 10,119.76 and 3,991.70 is: 5,972.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,763.52 : 10,119.76 = 3,991.70 : x
  2. Step 2: Convert to fraction form
    6,763.52/10,119.76 = 3,991.70/x
  3. Step 3: Cross multiply
    6,763.52x = 10,119.76 × 3,991.70
  4. Step 4: Simplify right side
    6,763.52x = 40,395,045.99
  5. Step 5: Solve for x
    x = 40,395,045.99/6,763.52
  6. Step 6: Final answer
    x = 5,972.49

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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.