Home / 3,554.78-4,905.75-1,982.88

Finding the Fourth Proportional to 3,554.78, 4,905.75 and 1,982.88

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Solution

The fourth proportional to 3,554.78, 4,905.75 and 1,982.88 is: 2,736.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.78 : 4,905.75 = 1,982.88 : x
  2. Step 2: Convert to fraction form
    3,554.78/4,905.75 = 1,982.88/x
  3. Step 3: Cross multiply
    3,554.78x = 4,905.75 × 1,982.88
  4. Step 4: Simplify right side
    3,554.78x = 9,727,489.03
  5. Step 5: Solve for x
    x = 9,727,489.03/3,554.78
  6. Step 6: Final answer
    x = 2,736.45

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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.