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Finding the Fourth Proportional to 6,554.32, 9,107.79 and 6,486.89

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Solution

The fourth proportional to 6,554.32, 9,107.79 and 6,486.89 is: 9,014.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,554.32 : 9,107.79 = 6,486.89 : x
  2. Step 2: Convert to fraction form
    6,554.32/9,107.79 = 6,486.89/x
  3. Step 3: Cross multiply
    6,554.32x = 9,107.79 × 6,486.89
  4. Step 4: Simplify right side
    6,554.32x = 59,081,198.50
  5. Step 5: Solve for x
    x = 59,081,198.50/6,554.32
  6. Step 6: Final answer
    x = 9,014.09

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Double scale
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Similar ratio
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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.