Home / 3,161.94-4,353.57-2,688.90

Finding the Fourth Proportional to 3,161.94, 4,353.57 and 2,688.90

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Solution

The fourth proportional to 3,161.94, 4,353.57 and 2,688.90 is: 3,702.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.94 : 4,353.57 = 2,688.90 : x
  2. Step 2: Convert to fraction form
    3,161.94/4,353.57 = 2,688.90/x
  3. Step 3: Cross multiply
    3,161.94x = 4,353.57 × 2,688.90
  4. Step 4: Simplify right side
    3,161.94x = 11,706,314.37
  5. Step 5: Solve for x
    x = 11,706,314.37/3,161.94
  6. Step 6: Final answer
    x = 3,702.26

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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.