Home / 2,879.12-3,973.20-1,637.12

Finding the Fourth Proportional to 2,879.12, 3,973.20 and 1,637.12

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Solution

The fourth proportional to 2,879.12, 3,973.20 and 1,637.12 is: 2,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.12 : 3,973.20 = 1,637.12 : x
  2. Step 2: Convert to fraction form
    2,879.12/3,973.20 = 1,637.12/x
  3. Step 3: Cross multiply
    2,879.12x = 3,973.20 × 1,637.12
  4. Step 4: Simplify right side
    2,879.12x = 6,504,605.18
  5. Step 5: Solve for x
    x = 6,504,605.18/2,879.12
  6. Step 6: Final answer
    x = 2,259.23

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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.