Home / 1,917.77-2,646.57-1,078.43

Finding the Fourth Proportional to 1,917.77, 2,646.57 and 1,078.43

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Solution

The fourth proportional to 1,917.77, 2,646.57 and 1,078.43 is: 1,488.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.77 : 2,646.57 = 1,078.43 : x
  2. Step 2: Convert to fraction form
    1,917.77/2,646.57 = 1,078.43/x
  3. Step 3: Cross multiply
    1,917.77x = 2,646.57 × 1,078.43
  4. Step 4: Simplify right side
    1,917.77x = 2,854,135.02
  5. Step 5: Solve for x
    x = 2,854,135.02/1,917.77
  6. Step 6: Final answer
    x = 1,488.26

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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.