Home / 1,918.38-2,647.39-1,132.43

Finding the Fourth Proportional to 1,918.38, 2,647.39 and 1,132.43

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Solution

The fourth proportional to 1,918.38, 2,647.39 and 1,132.43 is: 1,562.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.38 : 2,647.39 = 1,132.43 : x
  2. Step 2: Convert to fraction form
    1,918.38/2,647.39 = 1,132.43/x
  3. Step 3: Cross multiply
    1,918.38x = 2,647.39 × 1,132.43
  4. Step 4: Simplify right side
    1,918.38x = 2,997,983.86
  5. Step 5: Solve for x
    x = 2,997,983.86/1,918.38
  6. Step 6: Final answer
    x = 1,562.77

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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.