Home / 2,485.17-3,725.43-840.56

Finding the Fourth Proportional to 2,485.17, 3,725.43 and 840.56

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Solution

The fourth proportional to 2,485.17, 3,725.43 and 840.56 is: 1,260.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.17 : 3,725.43 = 840.56 : x
  2. Step 2: Convert to fraction form
    2,485.17/3,725.43 = 840.56/x
  3. Step 3: Cross multiply
    2,485.17x = 3,725.43 × 840.56
  4. Step 4: Simplify right side
    2,485.17x = 3,131,447.44
  5. Step 5: Solve for x
    x = 3,131,447.44/2,485.17
  6. Step 6: Final answer
    x = 1,260.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.