Home / 2,218.87-3,062.20-1,274.81

Finding the Fourth Proportional to 2,218.87, 3,062.20 and 1,274.81

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Solution

The fourth proportional to 2,218.87, 3,062.20 and 1,274.81 is: 1,759.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.87 : 3,062.20 = 1,274.81 : x
  2. Step 2: Convert to fraction form
    2,218.87/3,062.20 = 1,274.81/x
  3. Step 3: Cross multiply
    2,218.87x = 3,062.20 × 1,274.81
  4. Step 4: Simplify right side
    2,218.87x = 3,903,727.65
  5. Step 5: Solve for x
    x = 3,903,727.65/2,218.87
  6. Step 6: Final answer
    x = 1,759.33

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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.