Home / 1,889.06-2,605.32-1,216.98

Finding the Fourth Proportional to 1,889.06, 2,605.32 and 1,216.98

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Solution

The fourth proportional to 1,889.06, 2,605.32 and 1,216.98 is: 1,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.06 : 2,605.32 = 1,216.98 : x
  2. Step 2: Convert to fraction form
    1,889.06/2,605.32 = 1,216.98/x
  3. Step 3: Cross multiply
    1,889.06x = 2,605.32 × 1,216.98
  4. Step 4: Simplify right side
    1,889.06x = 3,170,622.33
  5. Step 5: Solve for x
    x = 3,170,622.33/1,889.06
  6. Step 6: Final answer
    x = 1,678.42

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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.