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Finding the Fourth Proportional to 6,763.56, 9,333 and 3,930.40

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Solution

The fourth proportional to 6,763.56, 9,333 and 3,930.40 is: 5,423.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,763.56 : 9,333 = 3,930.40 : x
  2. Step 2: Convert to fraction form
    6,763.56/9,333 = 3,930.40/x
  3. Step 3: Cross multiply
    6,763.56x = 9,333 × 3,930.40
  4. Step 4: Simplify right side
    6,763.56x = 36,682,423.20
  5. Step 5: Solve for x
    x = 36,682,423.20/6,763.56
  6. Step 6: Final answer
    x = 5,423.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.