Home / 2,291.38-3,161.71-1,394.62

Finding the Fourth Proportional to 2,291.38, 3,161.71 and 1,394.62

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Solution

The fourth proportional to 2,291.38, 3,161.71 and 1,394.62 is: 1,924.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.38 : 3,161.71 = 1,394.62 : x
  2. Step 2: Convert to fraction form
    2,291.38/3,161.71 = 1,394.62/x
  3. Step 3: Cross multiply
    2,291.38x = 3,161.71 × 1,394.62
  4. Step 4: Simplify right side
    2,291.38x = 4,409,384.00
  5. Step 5: Solve for x
    x = 4,409,384.00/2,291.38
  6. Step 6: Final answer
    x = 1,924.34

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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.