Home / 2,986.77-4,120.62-1,851.93

Finding the Fourth Proportional to 2,986.77, 4,120.62 and 1,851.93

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Solution

The fourth proportional to 2,986.77, 4,120.62 and 1,851.93 is: 2,554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.77 : 4,120.62 = 1,851.93 : x
  2. Step 2: Convert to fraction form
    2,986.77/4,120.62 = 1,851.93/x
  3. Step 3: Cross multiply
    2,986.77x = 4,120.62 × 1,851.93
  4. Step 4: Simplify right side
    2,986.77x = 7,631,099.80
  5. Step 5: Solve for x
    x = 7,631,099.80/2,986.77
  6. Step 6: Final answer
    x = 2,554.97

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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.