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Finding the Fourth Proportional to 3,556.56, 4,907.28 and 1,984.60

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Solution

The fourth proportional to 3,556.56, 4,907.28 and 1,984.60 is: 2,738.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.56 : 4,907.28 = 1,984.60 : x
  2. Step 2: Convert to fraction form
    3,556.56/4,907.28 = 1,984.60/x
  3. Step 3: Cross multiply
    3,556.56x = 4,907.28 × 1,984.60
  4. Step 4: Simplify right side
    3,556.56x = 9,738,987.89
  5. Step 5: Solve for x
    x = 9,738,987.89/3,556.56
  6. Step 6: Final answer
    x = 2,738.32

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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.