Home / 1,945.25-2,683.60-1,236.72

Finding the Fourth Proportional to 1,945.25, 2,683.60 and 1,236.72

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Solution

The fourth proportional to 1,945.25, 2,683.60 and 1,236.72 is: 1,706.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.25 : 2,683.60 = 1,236.72 : x
  2. Step 2: Convert to fraction form
    1,945.25/2,683.60 = 1,236.72/x
  3. Step 3: Cross multiply
    1,945.25x = 2,683.60 × 1,236.72
  4. Step 4: Simplify right side
    1,945.25x = 3,318,842.19
  5. Step 5: Solve for x
    x = 3,318,842.19/1,945.25
  6. Step 6: Final answer
    x = 1,706.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.