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Finding the Fourth Proportional to 2,045.06, 3,065.97 and 890

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Solution

The fourth proportional to 2,045.06, 3,065.97 and 890 is: 1,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,045.06 : 3,065.97 = 890 : x
  2. Step 2: Convert to fraction form
    2,045.06/3,065.97 = 890/x
  3. Step 3: Cross multiply
    2,045.06x = 3,065.97 × 890
  4. Step 4: Simplify right side
    2,045.06x = 2,728,708.85
  5. Step 5: Solve for x
    x = 2,728,708.85/2,045.06
  6. Step 6: Final answer
    x = 1,334.29

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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.