Home / 2,338.25-3,226.80-1,290.35

Finding the Fourth Proportional to 2,338.25, 3,226.80 and 1,290.35

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Solution

The fourth proportional to 2,338.25, 3,226.80 and 1,290.35 is: 1,780.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,338.25 : 3,226.80 = 1,290.35 : x
  2. Step 2: Convert to fraction form
    2,338.25/3,226.80 = 1,290.35/x
  3. Step 3: Cross multiply
    2,338.25x = 3,226.80 × 1,290.35
  4. Step 4: Simplify right side
    2,338.25x = 4,163,701.38
  5. Step 5: Solve for x
    x = 4,163,701.38/2,338.25
  6. Step 6: Final answer
    x = 1,780.69

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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.