Home / 2,879.37-3,973.50-1,620.45

Finding the Fourth Proportional to 2,879.37, 3,973.50 and 1,620.45

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Solution

The fourth proportional to 2,879.37, 3,973.50 and 1,620.45 is: 2,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.37 : 3,973.50 = 1,620.45 : x
  2. Step 2: Convert to fraction form
    2,879.37/3,973.50 = 1,620.45/x
  3. Step 3: Cross multiply
    2,879.37x = 3,973.50 × 1,620.45
  4. Step 4: Simplify right side
    2,879.37x = 6,438,858.08
  5. Step 5: Solve for x
    x = 6,438,858.08/2,879.37
  6. Step 6: Final answer
    x = 2,236.20

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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.