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Finding the Fourth Proportional to 2,191.38, 3,285.84 and 730.14

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Solution

The fourth proportional to 2,191.38, 3,285.84 and 730.14 is: 1,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.38 : 3,285.84 = 730.14 : x
  2. Step 2: Convert to fraction form
    2,191.38/3,285.84 = 730.14/x
  3. Step 3: Cross multiply
    2,191.38x = 3,285.84 × 730.14
  4. Step 4: Simplify right side
    2,191.38x = 2,399,123.22
  5. Step 5: Solve for x
    x = 2,399,123.22/2,191.38
  6. Step 6: Final answer
    x = 1,094.80

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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.