Home / 1,917.34-2,645.88-1,078.14

Finding the Fourth Proportional to 1,917.34, 2,645.88 and 1,078.14

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Solution

The fourth proportional to 1,917.34, 2,645.88 and 1,078.14 is: 1,487.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.34 : 2,645.88 = 1,078.14 : x
  2. Step 2: Convert to fraction form
    1,917.34/2,645.88 = 1,078.14/x
  3. Step 3: Cross multiply
    1,917.34x = 2,645.88 × 1,078.14
  4. Step 4: Simplify right side
    1,917.34x = 2,852,629.06
  5. Step 5: Solve for x
    x = 2,852,629.06/1,917.34
  6. Step 6: Final answer
    x = 1,487.81

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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.