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Finding the Fourth Proportional to 6,714.80, 9,305.69 and 6,620.84

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Solution

The fourth proportional to 6,714.80, 9,305.69 and 6,620.84 is: 9,175.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,714.80 : 9,305.69 = 6,620.84 : x
  2. Step 2: Convert to fraction form
    6,714.80/9,305.69 = 6,620.84/x
  3. Step 3: Cross multiply
    6,714.80x = 9,305.69 × 6,620.84
  4. Step 4: Simplify right side
    6,714.80x = 61,611,484.58
  5. Step 5: Solve for x
    x = 61,611,484.58/6,714.80
  6. Step 6: Final answer
    x = 9,175.48

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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.