Home / 1,427.19-1,968.44-1,228.35

Finding the Fourth Proportional to 1,427.19, 1,968.44 and 1,228.35

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Solution

The fourth proportional to 1,427.19, 1,968.44 and 1,228.35 is: 1,694.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.19 : 1,968.44 = 1,228.35 : x
  2. Step 2: Convert to fraction form
    1,427.19/1,968.44 = 1,228.35/x
  3. Step 3: Cross multiply
    1,427.19x = 1,968.44 × 1,228.35
  4. Step 4: Simplify right side
    1,427.19x = 2,417,933.27
  5. Step 5: Solve for x
    x = 2,417,933.27/1,427.19
  6. Step 6: Final answer
    x = 1,694.19

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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.