Home / 3,426.40-5,139.70-2,685.32

Finding the Fourth Proportional to 3,426.40, 5,139.70 and 2,685.32

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Solution

The fourth proportional to 3,426.40, 5,139.70 and 2,685.32 is: 4,028.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.40 : 5,139.70 = 2,685.32 : x
  2. Step 2: Convert to fraction form
    3,426.40/5,139.70 = 2,685.32/x
  3. Step 3: Cross multiply
    3,426.40x = 5,139.70 × 2,685.32
  4. Step 4: Simplify right side
    3,426.40x = 13,801,739.20
  5. Step 5: Solve for x
    x = 13,801,739.20/3,426.40
  6. Step 6: Final answer
    x = 4,028.06

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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.