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Finding the Fourth Proportional to 4,805.75, 7,208.64 and 1,157.75

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Solution

The fourth proportional to 4,805.75, 7,208.64 and 1,157.75 is: 1,736.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,805.75 : 7,208.64 = 1,157.75 : x
  2. Step 2: Convert to fraction form
    4,805.75/7,208.64 = 1,157.75/x
  3. Step 3: Cross multiply
    4,805.75x = 7,208.64 × 1,157.75
  4. Step 4: Simplify right side
    4,805.75x = 8,345,802.96
  5. Step 5: Solve for x
    x = 8,345,802.96/4,805.75
  6. Step 6: Final answer
    x = 1,736.63

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.