Home / 1,914.97-2,643.75-1,286.62

Finding the Fourth Proportional to 1,914.97, 2,643.75 and 1,286.62

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Solution

The fourth proportional to 1,914.97, 2,643.75 and 1,286.62 is: 1,776.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.97 : 2,643.75 = 1,286.62 : x
  2. Step 2: Convert to fraction form
    1,914.97/2,643.75 = 1,286.62/x
  3. Step 3: Cross multiply
    1,914.97x = 2,643.75 × 1,286.62
  4. Step 4: Simplify right side
    1,914.97x = 3,401,501.63
  5. Step 5: Solve for x
    x = 3,401,501.63/1,914.97
  6. Step 6: Final answer
    x = 1,776.27

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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.