Home / 1,983.86-2,739.59-1,276.94

Finding the Fourth Proportional to 1,983.86, 2,739.59 and 1,276.94

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Solution

The fourth proportional to 1,983.86, 2,739.59 and 1,276.94 is: 1,763.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.86 : 2,739.59 = 1,276.94 : x
  2. Step 2: Convert to fraction form
    1,983.86/2,739.59 = 1,276.94/x
  3. Step 3: Cross multiply
    1,983.86x = 2,739.59 × 1,276.94
  4. Step 4: Simplify right side
    1,983.86x = 3,498,292.05
  5. Step 5: Solve for x
    x = 3,498,292.05/1,983.86
  6. Step 6: Final answer
    x = 1,763.38

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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.