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Finding the Fourth Proportional to 7,659.99, 11,490.03 and 2,113.62

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Solution

The fourth proportional to 7,659.99, 11,490.03 and 2,113.62 is: 3,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.99 : 11,490.03 = 2,113.62 : x
  2. Step 2: Convert to fraction form
    7,659.99/11,490.03 = 2,113.62/x
  3. Step 3: Cross multiply
    7,659.99x = 11,490.03 × 2,113.62
  4. Step 4: Simplify right side
    7,659.99x = 24,285,557.21
  5. Step 5: Solve for x
    x = 24,285,557.21/7,659.99
  6. Step 6: Final answer
    x = 3,170.44

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Half scale
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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.