Home / 2,121.82-2,927.10-1,237.09

Finding the Fourth Proportional to 2,121.82, 2,927.10 and 1,237.09

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Solution

The fourth proportional to 2,121.82, 2,927.10 and 1,237.09 is: 1,706.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.82 : 2,927.10 = 1,237.09 : x
  2. Step 2: Convert to fraction form
    2,121.82/2,927.10 = 1,237.09/x
  3. Step 3: Cross multiply
    2,121.82x = 2,927.10 × 1,237.09
  4. Step 4: Simplify right side
    2,121.82x = 3,621,086.14
  5. Step 5: Solve for x
    x = 3,621,086.14/2,121.82
  6. Step 6: Final answer
    x = 1,706.59

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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.