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Finding the Fourth Proportional to 2,129.66, 3,194.49 and 1,436.84

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Solution

The fourth proportional to 2,129.66, 3,194.49 and 1,436.84 is: 2,155.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.66 : 3,194.49 = 1,436.84 : x
  2. Step 2: Convert to fraction form
    2,129.66/3,194.49 = 1,436.84/x
  3. Step 3: Cross multiply
    2,129.66x = 3,194.49 × 1,436.84
  4. Step 4: Simplify right side
    2,129.66x = 4,589,971.01
  5. Step 5: Solve for x
    x = 4,589,971.01/2,129.66
  6. Step 6: Final answer
    x = 2,155.26

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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.