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Finding the Fourth Proportional to 2,669.06, 4,003.80 and 914.90

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Solution

The fourth proportional to 2,669.06, 4,003.80 and 914.90 is: 1,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.06 : 4,003.80 = 914.90 : x
  2. Step 2: Convert to fraction form
    2,669.06/4,003.80 = 914.90/x
  3. Step 3: Cross multiply
    2,669.06x = 4,003.80 × 914.90
  4. Step 4: Simplify right side
    2,669.06x = 3,663,076.62
  5. Step 5: Solve for x
    x = 3,663,076.62/2,669.06
  6. Step 6: Final answer
    x = 1,372.42

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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.