Home / 3,851.64-5,315.22-2,173.06

Finding the Fourth Proportional to 3,851.64, 5,315.22 and 2,173.06

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Solution

The fourth proportional to 3,851.64, 5,315.22 and 2,173.06 is: 2,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.64 : 5,315.22 = 2,173.06 : x
  2. Step 2: Convert to fraction form
    3,851.64/5,315.22 = 2,173.06/x
  3. Step 3: Cross multiply
    3,851.64x = 5,315.22 × 2,173.06
  4. Step 4: Simplify right side
    3,851.64x = 11,550,291.97
  5. Step 5: Solve for x
    x = 11,550,291.97/3,851.64
  6. Step 6: Final answer
    x = 2,998.80

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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.