Home / 3,106.35-4,288.91-2,112.48

Finding the Fourth Proportional to 3,106.35, 4,288.91 and 2,112.48

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Solution

The fourth proportional to 3,106.35, 4,288.91 and 2,112.48 is: 2,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.35 : 4,288.91 = 2,112.48 : x
  2. Step 2: Convert to fraction form
    3,106.35/4,288.91 = 2,112.48/x
  3. Step 3: Cross multiply
    3,106.35x = 4,288.91 × 2,112.48
  4. Step 4: Simplify right side
    3,106.35x = 9,060,226.03
  5. Step 5: Solve for x
    x = 9,060,226.03/3,106.35
  6. Step 6: Final answer
    x = 2,916.68

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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.