Home / 2,646.28-3,969.72-1,086.22

Finding the Fourth Proportional to 2,646.28, 3,969.72 and 1,086.22

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Solution

The fourth proportional to 2,646.28, 3,969.72 and 1,086.22 is: 1,629.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.28 : 3,969.72 = 1,086.22 : x
  2. Step 2: Convert to fraction form
    2,646.28/3,969.72 = 1,086.22/x
  3. Step 3: Cross multiply
    2,646.28x = 3,969.72 × 1,086.22
  4. Step 4: Simplify right side
    2,646.28x = 4,311,989.26
  5. Step 5: Solve for x
    x = 4,311,989.26/2,646.28
  6. Step 6: Final answer
    x = 1,629.45

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1.5x scale

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.