Home / 2,282.16-3,149.64-1,287.60

Finding the Fourth Proportional to 2,282.16, 3,149.64 and 1,287.60

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Solution

The fourth proportional to 2,282.16, 3,149.64 and 1,287.60 is: 1,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,282.16 : 3,149.64 = 1,287.60 : x
  2. Step 2: Convert to fraction form
    2,282.16/3,149.64 = 1,287.60/x
  3. Step 3: Cross multiply
    2,282.16x = 3,149.64 × 1,287.60
  4. Step 4: Simplify right side
    2,282.16x = 4,055,476.46
  5. Step 5: Solve for x
    x = 4,055,476.46/2,282.16
  6. Step 6: Final answer
    x = 1,777.03

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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.