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Finding the Fourth Proportional to 6,910.70, 10,366.05 and 6,853.10

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Solution

The fourth proportional to 6,910.70, 10,366.05 and 6,853.10 is: 10,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,910.70 : 10,366.05 = 6,853.10 : x
  2. Step 2: Convert to fraction form
    6,910.70/10,366.05 = 6,853.10/x
  3. Step 3: Cross multiply
    6,910.70x = 10,366.05 × 6,853.10
  4. Step 4: Simplify right side
    6,910.70x = 71,039,577.26
  5. Step 5: Solve for x
    x = 71,039,577.26/6,910.70
  6. Step 6: Final answer
    x = 10,279.65

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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.