Home / 2,309.88-3,185.84-1,512.30

Finding the Fourth Proportional to 2,309.88, 3,185.84 and 1,512.30

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Solution

The fourth proportional to 2,309.88, 3,185.84 and 1,512.30 is: 2,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.88 : 3,185.84 = 1,512.30 : x
  2. Step 2: Convert to fraction form
    2,309.88/3,185.84 = 1,512.30/x
  3. Step 3: Cross multiply
    2,309.88x = 3,185.84 × 1,512.30
  4. Step 4: Simplify right side
    2,309.88x = 4,817,961.56
  5. Step 5: Solve for x
    x = 4,817,961.56/2,309.88
  6. Step 6: Final answer
    x = 2,085.80

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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.