Home / 3,103.91-4,283.35-1,687.62

Finding the Fourth Proportional to 3,103.91, 4,283.35 and 1,687.62

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Solution

The fourth proportional to 3,103.91, 4,283.35 and 1,687.62 is: 2,328.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.91 : 4,283.35 = 1,687.62 : x
  2. Step 2: Convert to fraction form
    3,103.91/4,283.35 = 1,687.62/x
  3. Step 3: Cross multiply
    3,103.91x = 4,283.35 × 1,687.62
  4. Step 4: Simplify right side
    3,103.91x = 7,228,662.91
  5. Step 5: Solve for x
    x = 7,228,662.91/3,103.91
  6. Step 6: Final answer
    x = 2,328.89

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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.