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Finding the Fourth Proportional to 5,122.42, 7,683.53 and 1,659.68

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Solution

The fourth proportional to 5,122.42, 7,683.53 and 1,659.68 is: 2,489.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.42 : 7,683.53 = 1,659.68 : x
  2. Step 2: Convert to fraction form
    5,122.42/7,683.53 = 1,659.68/x
  3. Step 3: Cross multiply
    5,122.42x = 7,683.53 × 1,659.68
  4. Step 4: Simplify right side
    5,122.42x = 12,752,201.07
  5. Step 5: Solve for x
    x = 12,752,201.07/5,122.42
  6. Step 6: Final answer
    x = 2,489.49

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Similar ratio
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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.