Home / 1,917.48-2,646.14-1,078.22

Finding the Fourth Proportional to 1,917.48, 2,646.14 and 1,078.22

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Solution

The fourth proportional to 1,917.48, 2,646.14 and 1,078.22 is: 1,487.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.48 : 2,646.14 = 1,078.22 : x
  2. Step 2: Convert to fraction form
    1,917.48/2,646.14 = 1,078.22/x
  3. Step 3: Cross multiply
    1,917.48x = 2,646.14 × 1,078.22
  4. Step 4: Simplify right side
    1,917.48x = 2,853,122.30
  5. Step 5: Solve for x
    x = 2,853,122.30/1,917.48
  6. Step 6: Final answer
    x = 1,487.95

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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.