Home / 3,084.90-4,257.26-1,687.65

Finding the Fourth Proportional to 3,084.90, 4,257.26 and 1,687.65

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Solution

The fourth proportional to 3,084.90, 4,257.26 and 1,687.65 is: 2,329.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.90 : 4,257.26 = 1,687.65 : x
  2. Step 2: Convert to fraction form
    3,084.90/4,257.26 = 1,687.65/x
  3. Step 3: Cross multiply
    3,084.90x = 4,257.26 × 1,687.65
  4. Step 4: Simplify right side
    3,084.90x = 7,184,735.11
  5. Step 5: Solve for x
    x = 7,184,735.11/3,084.90
  6. Step 6: Final answer
    x = 2,329.00

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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.