Home / 6,439.68-9,653.10-3,321.18

Finding the Fourth Proportional to 6,439.68, 9,653.10 and 3,321.18

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Solution

The fourth proportional to 6,439.68, 9,653.10 and 3,321.18 is: 4,978.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.68 : 9,653.10 = 3,321.18 : x
  2. Step 2: Convert to fraction form
    6,439.68/9,653.10 = 3,321.18/x
  3. Step 3: Cross multiply
    6,439.68x = 9,653.10 × 3,321.18
  4. Step 4: Simplify right side
    6,439.68x = 32,059,682.66
  5. Step 5: Solve for x
    x = 32,059,682.66/6,439.68
  6. Step 6: Final answer
    x = 4,978.46

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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.