Home / 2,219.51-3,062.94-1,224.80

Finding the Fourth Proportional to 2,219.51, 3,062.94 and 1,224.80

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Solution

The fourth proportional to 2,219.51, 3,062.94 and 1,224.80 is: 1,690.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.51 : 3,062.94 = 1,224.80 : x
  2. Step 2: Convert to fraction form
    2,219.51/3,062.94 = 1,224.80/x
  3. Step 3: Cross multiply
    2,219.51x = 3,062.94 × 1,224.80
  4. Step 4: Simplify right side
    2,219.51x = 3,751,473.60
  5. Step 5: Solve for x
    x = 3,751,473.60/2,219.51
  6. Step 6: Final answer
    x = 1,690.22

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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.