Home / 2,125.80-2,933.66-1,286.35

Finding the Fourth Proportional to 2,125.80, 2,933.66 and 1,286.35

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Solution

The fourth proportional to 2,125.80, 2,933.66 and 1,286.35 is: 1,775.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.80 : 2,933.66 = 1,286.35 : x
  2. Step 2: Convert to fraction form
    2,125.80/2,933.66 = 1,286.35/x
  3. Step 3: Cross multiply
    2,125.80x = 2,933.66 × 1,286.35
  4. Step 4: Simplify right side
    2,125.80x = 3,773,709.42
  5. Step 5: Solve for x
    x = 3,773,709.42/2,125.80
  6. Step 6: Final answer
    x = 1,775.19

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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.