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Finding the Fourth Proportional to 3,556.32, 4,907.43 and 1,984.38

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Solution

The fourth proportional to 3,556.32, 4,907.43 and 1,984.38 is: 2,738.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.32 : 4,907.43 = 1,984.38 : x
  2. Step 2: Convert to fraction form
    3,556.32/4,907.43 = 1,984.38/x
  3. Step 3: Cross multiply
    3,556.32x = 4,907.43 × 1,984.38
  4. Step 4: Simplify right side
    3,556.32x = 9,738,205.94
  5. Step 5: Solve for x
    x = 9,738,205.94/3,556.32
  6. Step 6: Final answer
    x = 2,738.28

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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.