Home / 3,106.35-4,287.60-1,926.72

Finding the Fourth Proportional to 3,106.35, 4,287.60 and 1,926.72

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Solution

The fourth proportional to 3,106.35, 4,287.60 and 1,926.72 is: 2,659.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.35 : 4,287.60 = 1,926.72 : x
  2. Step 2: Convert to fraction form
    3,106.35/4,287.60 = 1,926.72/x
  3. Step 3: Cross multiply
    3,106.35x = 4,287.60 × 1,926.72
  4. Step 4: Simplify right side
    3,106.35x = 8,261,004.67
  5. Step 5: Solve for x
    x = 8,261,004.67/3,106.35
  6. Step 6: Final answer
    x = 2,659.39

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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.