Home / 2,891.49-3,991.44-1,830.79

Finding the Fourth Proportional to 2,891.49, 3,991.44 and 1,830.79

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Solution

The fourth proportional to 2,891.49, 3,991.44 and 1,830.79 is: 2,527.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.49 : 3,991.44 = 1,830.79 : x
  2. Step 2: Convert to fraction form
    2,891.49/3,991.44 = 1,830.79/x
  3. Step 3: Cross multiply
    2,891.49x = 3,991.44 × 1,830.79
  4. Step 4: Simplify right side
    2,891.49x = 7,307,488.44
  5. Step 5: Solve for x
    x = 7,307,488.44/2,891.49
  6. Step 6: Final answer
    x = 2,527.24

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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.