Home / 1,629.78-2,248.61-999.66

Finding the Fourth Proportional to 1,629.78, 2,248.61 and 999.66

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Solution

The fourth proportional to 1,629.78, 2,248.61 and 999.66 is: 1,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.78 : 2,248.61 = 999.66 : x
  2. Step 2: Convert to fraction form
    1,629.78/2,248.61 = 999.66/x
  3. Step 3: Cross multiply
    1,629.78x = 2,248.61 × 999.66
  4. Step 4: Simplify right side
    1,629.78x = 2,247,840.47
  5. Step 5: Solve for x
    x = 2,247,840.47/1,629.78
  6. Step 6: Final answer
    x = 1,379.23

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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.