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Finding the Fourth Proportional to 9,136.54, 12,608.22 and 5,157.55

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Solution

The fourth proportional to 9,136.54, 12,608.22 and 5,157.55 is: 7,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,136.54 : 12,608.22 = 5,157.55 : x
  2. Step 2: Convert to fraction form
    9,136.54/12,608.22 = 5,157.55/x
  3. Step 3: Cross multiply
    9,136.54x = 12,608.22 × 5,157.55
  4. Step 4: Simplify right side
    9,136.54x = 65,027,525.06
  5. Step 5: Solve for x
    x = 65,027,525.06/9,136.54
  6. Step 6: Final answer
    x = 7,117.30

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Double scale
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Similar ratio
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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.