Home / 3,106.12-4,282.02-2,221.60

Finding the Fourth Proportional to 3,106.12, 4,282.02 and 2,221.60

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Solution

The fourth proportional to 3,106.12, 4,282.02 and 2,221.60 is: 3,062.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.12 : 4,282.02 = 2,221.60 : x
  2. Step 2: Convert to fraction form
    3,106.12/4,282.02 = 2,221.60/x
  3. Step 3: Cross multiply
    3,106.12x = 4,282.02 × 2,221.60
  4. Step 4: Simplify right side
    3,106.12x = 9,512,935.63
  5. Step 5: Solve for x
    x = 9,512,935.63/3,106.12
  6. Step 6: Final answer
    x = 3,062.64

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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.