Home / 2,290.98-3,437.91-1,121.70

Finding the Fourth Proportional to 2,290.98, 3,437.91 and 1,121.70

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Solution

The fourth proportional to 2,290.98, 3,437.91 and 1,121.70 is: 1,683.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.98 : 3,437.91 = 1,121.70 : x
  2. Step 2: Convert to fraction form
    2,290.98/3,437.91 = 1,121.70/x
  3. Step 3: Cross multiply
    2,290.98x = 3,437.91 × 1,121.70
  4. Step 4: Simplify right side
    2,290.98x = 3,856,303.65
  5. Step 5: Solve for x
    x = 3,856,303.65/2,290.98
  6. Step 6: Final answer
    x = 1,683.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.