Home / 3,851.73-5,315.09-2,173.55

Finding the Fourth Proportional to 3,851.73, 5,315.09 and 2,173.55

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Solution

The fourth proportional to 3,851.73, 5,315.09 and 2,173.55 is: 2,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.73 : 5,315.09 = 2,173.55 : x
  2. Step 2: Convert to fraction form
    3,851.73/5,315.09 = 2,173.55/x
  3. Step 3: Cross multiply
    3,851.73x = 5,315.09 × 2,173.55
  4. Step 4: Simplify right side
    3,851.73x = 11,552,576.43
  5. Step 5: Solve for x
    x = 11,552,576.43/3,851.73
  6. Step 6: Final answer
    x = 2,999.32

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Double scale
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1.5x scale

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.