Home / 3,072.09-4,608.15-1,428.42

Finding the Fourth Proportional to 3,072.09, 4,608.15 and 1,428.42

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Solution

The fourth proportional to 3,072.09, 4,608.15 and 1,428.42 is: 2,142.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.09 : 4,608.15 = 1,428.42 : x
  2. Step 2: Convert to fraction form
    3,072.09/4,608.15 = 1,428.42/x
  3. Step 3: Cross multiply
    3,072.09x = 4,608.15 × 1,428.42
  4. Step 4: Simplify right side
    3,072.09x = 6,582,373.62
  5. Step 5: Solve for x
    x = 6,582,373.62/3,072.09
  6. Step 6: Final answer
    x = 2,142.64

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1.5x scale

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.