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Finding the Fourth Proportional to 1,955.86, 2,699.03 and 1,116.54

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Solution

The fourth proportional to 1,955.86, 2,699.03 and 1,116.54 is: 1,540.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.86 : 2,699.03 = 1,116.54 : x
  2. Step 2: Convert to fraction form
    1,955.86/2,699.03 = 1,116.54/x
  3. Step 3: Cross multiply
    1,955.86x = 2,699.03 × 1,116.54
  4. Step 4: Simplify right side
    1,955.86x = 3,013,578.91
  5. Step 5: Solve for x
    x = 3,013,578.91/1,955.86
  6. Step 6: Final answer
    x = 1,540.79

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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.