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Finding the Fourth Proportional to 7,644.60, 11,466.90 and 7,579.80

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Solution

The fourth proportional to 7,644.60, 11,466.90 and 7,579.80 is: 11,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,644.60 : 11,466.90 = 7,579.80 : x
  2. Step 2: Convert to fraction form
    7,644.60/11,466.90 = 7,579.80/x
  3. Step 3: Cross multiply
    7,644.60x = 11,466.90 × 7,579.80
  4. Step 4: Simplify right side
    7,644.60x = 86,916,808.62
  5. Step 5: Solve for x
    x = 86,916,808.62/7,644.60
  6. Step 6: Final answer
    x = 11,369.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.