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Finding the Fourth Proportional to 6,763.40, 10,128.88 and 3,983.48

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Solution

The fourth proportional to 6,763.40, 10,128.88 and 3,983.48 is: 5,965.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,763.40 : 10,128.88 = 3,983.48 : x
  2. Step 2: Convert to fraction form
    6,763.40/10,128.88 = 3,983.48/x
  3. Step 3: Cross multiply
    6,763.40x = 10,128.88 × 3,983.48
  4. Step 4: Simplify right side
    6,763.40x = 40,348,190.90
  5. Step 5: Solve for x
    x = 40,348,190.90/6,763.40
  6. Step 6: Final answer
    x = 5,965.67

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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.