Home / 3,097.40-4,268.40-2,164.28

Finding the Fourth Proportional to 3,097.40, 4,268.40 and 2,164.28

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Solution

The fourth proportional to 3,097.40, 4,268.40 and 2,164.28 is: 2,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,097.40 : 4,268.40 = 2,164.28 : x
  2. Step 2: Convert to fraction form
    3,097.40/4,268.40 = 2,164.28/x
  3. Step 3: Cross multiply
    3,097.40x = 4,268.40 × 2,164.28
  4. Step 4: Simplify right side
    3,097.40x = 9,238,012.75
  5. Step 5: Solve for x
    x = 9,238,012.75/3,097.40
  6. Step 6: Final answer
    x = 2,982.51

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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.