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Finding the Fourth Proportional to 1,268.94, 1,888.44 and 1,228.44

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Solution

The fourth proportional to 1,268.94, 1,888.44 and 1,228.44 is: 1,828.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.94 : 1,888.44 = 1,228.44 : x
  2. Step 2: Convert to fraction form
    1,268.94/1,888.44 = 1,228.44/x
  3. Step 3: Cross multiply
    1,268.94x = 1,888.44 × 1,228.44
  4. Step 4: Simplify right side
    1,268.94x = 2,319,835.23
  5. Step 5: Solve for x
    x = 2,319,835.23/1,268.94
  6. Step 6: Final answer
    x = 1,828.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.