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Finding the Fourth Proportional to 2,040.65, 3,058.95 and 999.80

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Solution

The fourth proportional to 2,040.65, 3,058.95 and 999.80 is: 1,498.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.65 : 3,058.95 = 999.80 : x
  2. Step 2: Convert to fraction form
    2,040.65/3,058.95 = 999.80/x
  3. Step 3: Cross multiply
    2,040.65x = 3,058.95 × 999.80
  4. Step 4: Simplify right side
    2,040.65x = 3,058,338.21
  5. Step 5: Solve for x
    x = 3,058,338.21/2,040.65
  6. Step 6: Final answer
    x = 1,498.71

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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.