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Finding the Fourth Proportional to 6,964.31, 9,610.62 and 3,820.43

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Solution

The fourth proportional to 6,964.31, 9,610.62 and 3,820.43 is: 5,272.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,964.31 : 9,610.62 = 3,820.43 : x
  2. Step 2: Convert to fraction form
    6,964.31/9,610.62 = 3,820.43/x
  3. Step 3: Cross multiply
    6,964.31x = 9,610.62 × 3,820.43
  4. Step 4: Simplify right side
    6,964.31x = 36,716,688.84
  5. Step 5: Solve for x
    x = 36,716,688.84/6,964.31
  6. Step 6: Final answer
    x = 5,272.12

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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.