Home / 3,851.64-5,315.22-2,173.05

Finding the Fourth Proportional to 3,851.64, 5,315.22 and 2,173.05

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Solution

The fourth proportional to 3,851.64, 5,315.22 and 2,173.05 is: 2,998.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.64 : 5,315.22 = 2,173.05 : x
  2. Step 2: Convert to fraction form
    3,851.64/5,315.22 = 2,173.05/x
  3. Step 3: Cross multiply
    3,851.64x = 5,315.22 × 2,173.05
  4. Step 4: Simplify right side
    3,851.64x = 11,550,238.82
  5. Step 5: Solve for x
    x = 11,550,238.82/3,851.64
  6. Step 6: Final answer
    x = 2,998.78

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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.