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Finding the Fourth Proportional to 2,191.53, 3,285.68 and 804.14

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Solution

The fourth proportional to 2,191.53, 3,285.68 and 804.14 is: 1,205.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.53 : 3,285.68 = 804.14 : x
  2. Step 2: Convert to fraction form
    2,191.53/3,285.68 = 804.14/x
  3. Step 3: Cross multiply
    2,191.53x = 3,285.68 × 804.14
  4. Step 4: Simplify right side
    2,191.53x = 2,642,126.27
  5. Step 5: Solve for x
    x = 2,642,126.27/2,191.53
  6. Step 6: Final answer
    x = 1,205.61

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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.