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Finding the Fourth Proportional to 6,855.60, 9,460.69 and 3,711.80

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Solution

The fourth proportional to 6,855.60, 9,460.69 and 3,711.80 is: 5,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.60 : 9,460.69 = 3,711.80 : x
  2. Step 2: Convert to fraction form
    6,855.60/9,460.69 = 3,711.80/x
  3. Step 3: Cross multiply
    6,855.60x = 9,460.69 × 3,711.80
  4. Step 4: Simplify right side
    6,855.60x = 35,116,189.14
  5. Step 5: Solve for x
    x = 35,116,189.14/6,855.60
  6. Step 6: Final answer
    x = 5,122.26

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Half 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.