Home / 5,428.69-7,492.97-3,072.20

Finding the Fourth Proportional to 5,428.69, 7,492.97 and 3,072.20

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Solution

The fourth proportional to 5,428.69, 7,492.97 and 3,072.20 is: 4,240.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.69 : 7,492.97 = 3,072.20 : x
  2. Step 2: Convert to fraction form
    5,428.69/7,492.97 = 3,072.20/x
  3. Step 3: Cross multiply
    5,428.69x = 7,492.97 × 3,072.20
  4. Step 4: Simplify right side
    5,428.69x = 23,019,872.65
  5. Step 5: Solve for x
    x = 23,019,872.65/5,428.69
  6. Step 6: Final answer
    x = 4,240.41

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1.5x scale

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.