Home / 3,428.12-5,133.98-2,690.01

Finding the Fourth Proportional to 3,428.12, 5,133.98 and 2,690.01

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Solution

The fourth proportional to 3,428.12, 5,133.98 and 2,690.01 is: 4,028.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.12 : 5,133.98 = 2,690.01 : x
  2. Step 2: Convert to fraction form
    3,428.12/5,133.98 = 2,690.01/x
  3. Step 3: Cross multiply
    3,428.12x = 5,133.98 × 2,690.01
  4. Step 4: Simplify right side
    3,428.12x = 13,810,464.26
  5. Step 5: Solve for x
    x = 13,810,464.26/3,428.12
  6. Step 6: Final answer
    x = 4,028.58

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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.