Home / 2,680.16-4,021.25-1,858.01

Finding the Fourth Proportional to 2,680.16, 4,021.25 and 1,858.01

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Solution

The fourth proportional to 2,680.16, 4,021.25 and 1,858.01 is: 2,787.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.16 : 4,021.25 = 1,858.01 : x
  2. Step 2: Convert to fraction form
    2,680.16/4,021.25 = 1,858.01/x
  3. Step 3: Cross multiply
    2,680.16x = 4,021.25 × 1,858.01
  4. Step 4: Simplify right side
    2,680.16x = 7,471,493.32
  5. Step 5: Solve for x
    x = 7,471,493.32/2,680.16
  6. Step 6: Final answer
    x = 2,787.71

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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.