Home / 3,103.67-4,283.06-1,687.38

Finding the Fourth Proportional to 3,103.67, 4,283.06 and 1,687.38

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Solution

The fourth proportional to 3,103.67, 4,283.06 and 1,687.38 is: 2,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.67 : 4,283.06 = 1,687.38 : x
  2. Step 2: Convert to fraction form
    3,103.67/4,283.06 = 1,687.38/x
  3. Step 3: Cross multiply
    3,103.67x = 4,283.06 × 1,687.38
  4. Step 4: Simplify right side
    3,103.67x = 7,227,141.35
  5. Step 5: Solve for x
    x = 7,227,141.35/3,103.67
  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.