Home / 3,112.60-4,295.82-1,786.72

Finding the Fourth Proportional to 3,112.60, 4,295.82 and 1,786.72

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Solution

The fourth proportional to 3,112.60, 4,295.82 and 1,786.72 is: 2,465.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.60 : 4,295.82 = 1,786.72 : x
  2. Step 2: Convert to fraction form
    3,112.60/4,295.82 = 1,786.72/x
  3. Step 3: Cross multiply
    3,112.60x = 4,295.82 × 1,786.72
  4. Step 4: Simplify right side
    3,112.60x = 7,675,427.51
  5. Step 5: Solve for x
    x = 7,675,427.51/3,112.60
  6. Step 6: Final answer
    x = 2,465.92

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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.