Home / 1,976.04-2,728.26-1,230.30

Finding the Fourth Proportional to 1,976.04, 2,728.26 and 1,230.30

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Solution

The fourth proportional to 1,976.04, 2,728.26 and 1,230.30 is: 1,698.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.04 : 2,728.26 = 1,230.30 : x
  2. Step 2: Convert to fraction form
    1,976.04/2,728.26 = 1,230.30/x
  3. Step 3: Cross multiply
    1,976.04x = 2,728.26 × 1,230.30
  4. Step 4: Simplify right side
    1,976.04x = 3,356,578.28
  5. Step 5: Solve for x
    x = 3,356,578.28/1,976.04
  6. Step 6: Final answer
    x = 1,698.64

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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.