Home / 3,112.98-4,296.15-1,786.74

Finding the Fourth Proportional to 3,112.98, 4,296.15 and 1,786.74

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Solution

The fourth proportional to 3,112.98, 4,296.15 and 1,786.74 is: 2,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.98 : 4,296.15 = 1,786.74 : x
  2. Step 2: Convert to fraction form
    3,112.98/4,296.15 = 1,786.74/x
  3. Step 3: Cross multiply
    3,112.98x = 4,296.15 × 1,786.74
  4. Step 4: Simplify right side
    3,112.98x = 7,676,103.05
  5. Step 5: Solve for x
    x = 7,676,103.05/3,112.98
  6. Step 6: Final answer
    x = 2,465.84

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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.