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Finding the Fourth Proportional to 1,608.73, 2,219.30 and 1,136.63

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Solution

The fourth proportional to 1,608.73, 2,219.30 and 1,136.63 is: 1,568.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.73 : 2,219.30 = 1,136.63 : x
  2. Step 2: Convert to fraction form
    1,608.73/2,219.30 = 1,136.63/x
  3. Step 3: Cross multiply
    1,608.73x = 2,219.30 × 1,136.63
  4. Step 4: Simplify right side
    1,608.73x = 2,522,527.09
  5. Step 5: Solve for x
    x = 2,522,527.09/1,608.73
  6. Step 6: Final answer
    x = 1,568.03

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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.