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Finding the Fourth Proportional to 8,425.68, 11,620.44 and 6,326.16

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Solution

The fourth proportional to 8,425.68, 11,620.44 and 6,326.16 is: 8,724.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.68 : 11,620.44 = 6,326.16 : x
  2. Step 2: Convert to fraction form
    8,425.68/11,620.44 = 6,326.16/x
  3. Step 3: Cross multiply
    8,425.68x = 11,620.44 × 6,326.16
  4. Step 4: Simplify right side
    8,425.68x = 73,512,762.71
  5. Step 5: Solve for x
    x = 73,512,762.71/8,425.68
  6. Step 6: Final answer
    x = 8,724.85

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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.