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Finding the Fourth Proportional to 3,656.75, 5,478.24 and 1,805.70

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Solution

The fourth proportional to 3,656.75, 5,478.24 and 1,805.70 is: 2,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.75 : 5,478.24 = 1,805.70 : x
  2. Step 2: Convert to fraction form
    3,656.75/5,478.24 = 1,805.70/x
  3. Step 3: Cross multiply
    3,656.75x = 5,478.24 × 1,805.70
  4. Step 4: Simplify right side
    3,656.75x = 9,892,057.97
  5. Step 5: Solve for x
    x = 9,892,057.97/3,656.75
  6. Step 6: Final answer
    x = 2,705.15

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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.