Home / 8,105.04-11,174.76-6,611.40

Finding the Fourth Proportional to 8,105.04, 11,174.76 and 6,611.40

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Solution

The fourth proportional to 8,105.04, 11,174.76 and 6,611.40 is: 9,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.04 : 11,174.76 = 6,611.40 : x
  2. Step 2: Convert to fraction form
    8,105.04/11,174.76 = 6,611.40/x
  3. Step 3: Cross multiply
    8,105.04x = 11,174.76 × 6,611.40
  4. Step 4: Simplify right side
    8,105.04x = 73,880,808.26
  5. Step 5: Solve for x
    x = 73,880,808.26/8,105.04
  6. Step 6: Final answer
    x = 9,115.42

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.