Home / 6,422.75-8,864.12-3,628.43

Finding the Fourth Proportional to 6,422.75, 8,864.12 and 3,628.43

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Solution

The fourth proportional to 6,422.75, 8,864.12 and 3,628.43 is: 5,007.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.75 : 8,864.12 = 3,628.43 : x
  2. Step 2: Convert to fraction form
    6,422.75/8,864.12 = 3,628.43/x
  3. Step 3: Cross multiply
    6,422.75x = 8,864.12 × 3,628.43
  4. Step 4: Simplify right side
    6,422.75x = 32,162,820.79
  5. Step 5: Solve for x
    x = 32,162,820.79/6,422.75
  6. Step 6: Final answer
    x = 5,007.64

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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.