Home / 2,290.98-3,161.70-1,296.36

Finding the Fourth Proportional to 2,290.98, 3,161.70 and 1,296.36

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Solution

The fourth proportional to 2,290.98, 3,161.70 and 1,296.36 is: 1,789.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.98 : 3,161.70 = 1,296.36 : x
  2. Step 2: Convert to fraction form
    2,290.98/3,161.70 = 1,296.36/x
  3. Step 3: Cross multiply
    2,290.98x = 3,161.70 × 1,296.36
  4. Step 4: Simplify right side
    2,290.98x = 4,098,701.41
  5. Step 5: Solve for x
    x = 4,098,701.41/2,290.98
  6. Step 6: Final answer
    x = 1,789.06

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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.