Home / 3,480.14-4,801.90-1,988.54

Finding the Fourth Proportional to 3,480.14, 4,801.90 and 1,988.54

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Solution

The fourth proportional to 3,480.14, 4,801.90 and 1,988.54 is: 2,743.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.14 : 4,801.90 = 1,988.54 : x
  2. Step 2: Convert to fraction form
    3,480.14/4,801.90 = 1,988.54/x
  3. Step 3: Cross multiply
    3,480.14x = 4,801.90 × 1,988.54
  4. Step 4: Simplify right side
    3,480.14x = 9,548,770.23
  5. Step 5: Solve for x
    x = 9,548,770.23/3,480.14
  6. Step 6: Final answer
    x = 2,743.79

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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.