Home / 2,121.62-2,926.60-1,237.32

Finding the Fourth Proportional to 2,121.62, 2,926.60 and 1,237.32

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Solution

The fourth proportional to 2,121.62, 2,926.60 and 1,237.32 is: 1,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.62 : 2,926.60 = 1,237.32 : x
  2. Step 2: Convert to fraction form
    2,121.62/2,926.60 = 1,237.32/x
  3. Step 3: Cross multiply
    2,121.62x = 2,926.60 × 1,237.32
  4. Step 4: Simplify right side
    2,121.62x = 3,621,137.62
  5. Step 5: Solve for x
    x = 3,621,137.62/2,121.62
  6. Step 6: Final answer
    x = 1,706.78

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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.