Home / 3,020.89-4,164.46-2,121.90

Finding the Fourth Proportional to 3,020.89, 4,164.46 and 2,121.90

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Solution

The fourth proportional to 3,020.89, 4,164.46 and 2,121.90 is: 2,925.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.89 : 4,164.46 = 2,121.90 : x
  2. Step 2: Convert to fraction form
    3,020.89/4,164.46 = 2,121.90/x
  3. Step 3: Cross multiply
    3,020.89x = 4,164.46 × 2,121.90
  4. Step 4: Simplify right side
    3,020.89x = 8,836,567.67
  5. Step 5: Solve for x
    x = 8,836,567.67/3,020.89
  6. Step 6: Final answer
    x = 2,925.15

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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.