Home / 2,584.12-3,878.16-1,286.68

Finding the Fourth Proportional to 2,584.12, 3,878.16 and 1,286.68

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Solution

The fourth proportional to 2,584.12, 3,878.16 and 1,286.68 is: 1,931.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,584.12 : 3,878.16 = 1,286.68 : x
  2. Step 2: Convert to fraction form
    2,584.12/3,878.16 = 1,286.68/x
  3. Step 3: Cross multiply
    2,584.12x = 3,878.16 × 1,286.68
  4. Step 4: Simplify right side
    2,584.12x = 4,989,950.91
  5. Step 5: Solve for x
    x = 4,989,950.91/2,584.12
  6. Step 6: Final answer
    x = 1,931.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.