Home / 2,112.58-2,914.18-1,228.26

Finding the Fourth Proportional to 2,112.58, 2,914.18 and 1,228.26

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Solution

The fourth proportional to 2,112.58, 2,914.18 and 1,228.26 is: 1,694.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.58 : 2,914.18 = 1,228.26 : x
  2. Step 2: Convert to fraction form
    2,112.58/2,914.18 = 1,228.26/x
  3. Step 3: Cross multiply
    2,112.58x = 2,914.18 × 1,228.26
  4. Step 4: Simplify right side
    2,112.58x = 3,579,378.58
  5. Step 5: Solve for x
    x = 3,579,378.58/2,112.58
  6. Step 6: Final answer
    x = 1,694.32

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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.