Home / 3,090.45-4,629.60-2,106.30

Finding the Fourth Proportional to 3,090.45, 4,629.60 and 2,106.30

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Solution

The fourth proportional to 3,090.45, 4,629.60 and 2,106.30 is: 3,155.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.45 : 4,629.60 = 2,106.30 : x
  2. Step 2: Convert to fraction form
    3,090.45/4,629.60 = 2,106.30/x
  3. Step 3: Cross multiply
    3,090.45x = 4,629.60 × 2,106.30
  4. Step 4: Simplify right side
    3,090.45x = 9,751,326.48
  5. Step 5: Solve for x
    x = 9,751,326.48/3,090.45
  6. Step 6: Final answer
    x = 3,155.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.