Home / 1,610.79-2,222.49-1,021.11

Finding the Fourth Proportional to 1,610.79, 2,222.49 and 1,021.11

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Solution

The fourth proportional to 1,610.79, 2,222.49 and 1,021.11 is: 1,408.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.79 : 2,222.49 = 1,021.11 : x
  2. Step 2: Convert to fraction form
    1,610.79/2,222.49 = 1,021.11/x
  3. Step 3: Cross multiply
    1,610.79x = 2,222.49 × 1,021.11
  4. Step 4: Simplify right side
    1,610.79x = 2,269,406.76
  5. Step 5: Solve for x
    x = 2,269,406.76/1,610.79
  6. Step 6: Final answer
    x = 1,408.88

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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.