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Finding the Fourth Proportional to 6,765.46, 9,333.79 and 3,780.21

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Solution

The fourth proportional to 6,765.46, 9,333.79 and 3,780.21 is: 5,215.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,765.46 : 9,333.79 = 3,780.21 : x
  2. Step 2: Convert to fraction form
    6,765.46/9,333.79 = 3,780.21/x
  3. Step 3: Cross multiply
    6,765.46x = 9,333.79 × 3,780.21
  4. Step 4: Simplify right side
    6,765.46x = 35,283,686.30
  5. Step 5: Solve for x
    x = 35,283,686.30/6,765.46
  6. Step 6: Final answer
    x = 5,215.27

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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.