Home / 3,084.63-4,256.78-1,687.38

Finding the Fourth Proportional to 3,084.63, 4,256.78 and 1,687.38

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Solution

The fourth proportional to 3,084.63, 4,256.78 and 1,687.38 is: 2,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.63 : 4,256.78 = 1,687.38 : x
  2. Step 2: Convert to fraction form
    3,084.63/4,256.78 = 1,687.38/x
  3. Step 3: Cross multiply
    3,084.63x = 4,256.78 × 1,687.38
  4. Step 4: Simplify right side
    3,084.63x = 7,182,805.44
  5. Step 5: Solve for x
    x = 7,182,805.44/3,084.63
  6. Step 6: Final answer
    x = 2,328.58

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1.5x scale

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.