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Finding the Fourth Proportional to 2,669.95, 4,003.56 and 914.68

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Solution

The fourth proportional to 2,669.95, 4,003.56 and 914.68 is: 1,371.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.95 : 4,003.56 = 914.68 : x
  2. Step 2: Convert to fraction form
    2,669.95/4,003.56 = 914.68/x
  3. Step 3: Cross multiply
    2,669.95x = 4,003.56 × 914.68
  4. Step 4: Simplify right side
    2,669.95x = 3,661,976.26
  5. Step 5: Solve for x
    x = 3,661,976.26/2,669.95
  6. Step 6: Final answer
    x = 1,371.55

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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.