Home / 2,338.20-3,226.80-1,394.40

Finding the Fourth Proportional to 2,338.20, 3,226.80 and 1,394.40

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Solution

The fourth proportional to 2,338.20, 3,226.80 and 1,394.40 is: 1,924.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,338.20 : 3,226.80 = 1,394.40 : x
  2. Step 2: Convert to fraction form
    2,338.20/3,226.80 = 1,394.40/x
  3. Step 3: Cross multiply
    2,338.20x = 3,226.80 × 1,394.40
  4. Step 4: Simplify right side
    2,338.20x = 4,499,449.92
  5. Step 5: Solve for x
    x = 4,499,449.92/2,338.20
  6. Step 6: Final answer
    x = 1,924.32

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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.