Home / 2,220.72-3,330.93-1,353.21

Finding the Fourth Proportional to 2,220.72, 3,330.93 and 1,353.21

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Solution

The fourth proportional to 2,220.72, 3,330.93 and 1,353.21 is: 2,029.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.72 : 3,330.93 = 1,353.21 : x
  2. Step 2: Convert to fraction form
    2,220.72/3,330.93 = 1,353.21/x
  3. Step 3: Cross multiply
    2,220.72x = 3,330.93 × 1,353.21
  4. Step 4: Simplify right side
    2,220.72x = 4,507,447.79
  5. Step 5: Solve for x
    x = 4,507,447.79/2,220.72
  6. Step 6: Final answer
    x = 2,029.72

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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.