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Finding the Fourth Proportional to 2,665.86, 3,998.22 and 1,554.54

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Solution

The fourth proportional to 2,665.86, 3,998.22 and 1,554.54 is: 2,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.86 : 3,998.22 = 1,554.54 : x
  2. Step 2: Convert to fraction form
    2,665.86/3,998.22 = 1,554.54/x
  3. Step 3: Cross multiply
    2,665.86x = 3,998.22 × 1,554.54
  4. Step 4: Simplify right side
    2,665.86x = 6,215,392.92
  5. Step 5: Solve for x
    x = 6,215,392.92/2,665.86
  6. Step 6: Final answer
    x = 2,331.48

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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.