Home / 3,116.30-4,300.26-1,789.75

Finding the Fourth Proportional to 3,116.30, 4,300.26 and 1,789.75

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Solution

The fourth proportional to 3,116.30, 4,300.26 and 1,789.75 is: 2,469.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.30 : 4,300.26 = 1,789.75 : x
  2. Step 2: Convert to fraction form
    3,116.30/4,300.26 = 1,789.75/x
  3. Step 3: Cross multiply
    3,116.30x = 4,300.26 × 1,789.75
  4. Step 4: Simplify right side
    3,116.30x = 7,696,381.39
  5. Step 5: Solve for x
    x = 7,696,381.39/3,116.30
  6. Step 6: Final answer
    x = 2,469.72

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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.