Home / 2,229.12-3,076.09-1,285.08

Finding the Fourth Proportional to 2,229.12, 3,076.09 and 1,285.08

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Solution

The fourth proportional to 2,229.12, 3,076.09 and 1,285.08 is: 1,773.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.12 : 3,076.09 = 1,285.08 : x
  2. Step 2: Convert to fraction form
    2,229.12/3,076.09 = 1,285.08/x
  3. Step 3: Cross multiply
    2,229.12x = 3,076.09 × 1,285.08
  4. Step 4: Simplify right side
    2,229.12x = 3,953,030.06
  5. Step 5: Solve for x
    x = 3,953,030.06/2,229.12
  6. Step 6: Final answer
    x = 1,773.36

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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.