Home / 2,218.32-3,062.04-1,287.60

Finding the Fourth Proportional to 2,218.32, 3,062.04 and 1,287.60

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Solution

The fourth proportional to 2,218.32, 3,062.04 and 1,287.60 is: 1,777.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.32 : 3,062.04 = 1,287.60 : x
  2. Step 2: Convert to fraction form
    2,218.32/3,062.04 = 1,287.60/x
  3. Step 3: Cross multiply
    2,218.32x = 3,062.04 × 1,287.60
  4. Step 4: Simplify right side
    2,218.32x = 3,942,682.70
  5. Step 5: Solve for x
    x = 3,942,682.70/2,218.32
  6. Step 6: Final answer
    x = 1,777.33

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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.