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Finding the Fourth Proportional to 3,445.81, 4,755.51 and 1,954

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Solution

The fourth proportional to 3,445.81, 4,755.51 and 1,954 is: 2,696.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.81 : 4,755.51 = 1,954 : x
  2. Step 2: Convert to fraction form
    3,445.81/4,755.51 = 1,954/x
  3. Step 3: Cross multiply
    3,445.81x = 4,755.51 × 1,954
  4. Step 4: Simplify right side
    3,445.81x = 9,292,266.54
  5. Step 5: Solve for x
    x = 9,292,266.54/3,445.81
  6. Step 6: Final answer
    x = 2,696.69

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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.