Home / 1,643.25-2,267.70-1,119.27

Finding the Fourth Proportional to 1,643.25, 2,267.70 and 1,119.27

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Solution

The fourth proportional to 1,643.25, 2,267.70 and 1,119.27 is: 1,544.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.25 : 2,267.70 = 1,119.27 : x
  2. Step 2: Convert to fraction form
    1,643.25/2,267.70 = 1,119.27/x
  3. Step 3: Cross multiply
    1,643.25x = 2,267.70 × 1,119.27
  4. Step 4: Simplify right side
    1,643.25x = 2,538,168.58
  5. Step 5: Solve for x
    x = 2,538,168.58/1,643.25
  6. Step 6: Final answer
    x = 1,544.60

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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.