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Finding the Fourth Proportional to 6,840.12, 9,479.02 and 6,708.88

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Solution

The fourth proportional to 6,840.12, 9,479.02 and 6,708.88 is: 9,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840.12 : 9,479.02 = 6,708.88 : x
  2. Step 2: Convert to fraction form
    6,840.12/9,479.02 = 6,708.88/x
  3. Step 3: Cross multiply
    6,840.12x = 9,479.02 × 6,708.88
  4. Step 4: Simplify right side
    6,840.12x = 63,593,607.70
  5. Step 5: Solve for x
    x = 63,593,607.70/6,840.12
  6. Step 6: Final answer
    x = 9,297.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.