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Finding the Fourth Proportional to 1,951.77, 2,693.21 and 1,112.48

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Solution

The fourth proportional to 1,951.77, 2,693.21 and 1,112.48 is: 1,535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.77 : 2,693.21 = 1,112.48 : x
  2. Step 2: Convert to fraction form
    1,951.77/2,693.21 = 1,112.48/x
  3. Step 3: Cross multiply
    1,951.77x = 2,693.21 × 1,112.48
  4. Step 4: Simplify right side
    1,951.77x = 2,996,142.26
  5. Step 5: Solve for x
    x = 2,996,142.26/1,951.77
  6. Step 6: Final answer
    x = 1,535.09

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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.