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Finding the Fourth Proportional to 3,518.50, 4,855.11 and 1,946.38

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Solution

The fourth proportional to 3,518.50, 4,855.11 and 1,946.38 is: 2,685.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.50 : 4,855.11 = 1,946.38 : x
  2. Step 2: Convert to fraction form
    3,518.50/4,855.11 = 1,946.38/x
  3. Step 3: Cross multiply
    3,518.50x = 4,855.11 × 1,946.38
  4. Step 4: Simplify right side
    3,518.50x = 9,449,889.00
  5. Step 5: Solve for x
    x = 9,449,889.00/3,518.50
  6. Step 6: Final answer
    x = 2,685.77

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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.