Home / 2,125.84-2,933.32-1,286.40

Finding the Fourth Proportional to 2,125.84, 2,933.32 and 1,286.40

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Solution

The fourth proportional to 2,125.84, 2,933.32 and 1,286.40 is: 1,775.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.84 : 2,933.32 = 1,286.40 : x
  2. Step 2: Convert to fraction form
    2,125.84/2,933.32 = 1,286.40/x
  3. Step 3: Cross multiply
    2,125.84x = 2,933.32 × 1,286.40
  4. Step 4: Simplify right side
    2,125.84x = 3,773,422.85
  5. Step 5: Solve for x
    x = 3,773,422.85/2,125.84
  6. Step 6: Final answer
    x = 1,775.03

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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.