Home / 3,091.55-4,264.38-1,911.38

Finding the Fourth Proportional to 3,091.55, 4,264.38 and 1,911.38

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Solution

The fourth proportional to 3,091.55, 4,264.38 and 1,911.38 is: 2,636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.55 : 4,264.38 = 1,911.38 : x
  2. Step 2: Convert to fraction form
    3,091.55/4,264.38 = 1,911.38/x
  3. Step 3: Cross multiply
    3,091.55x = 4,264.38 × 1,911.38
  4. Step 4: Simplify right side
    3,091.55x = 8,150,829.32
  5. Step 5: Solve for x
    x = 8,150,829.32/3,091.55
  6. Step 6: Final answer
    x = 2,636.49

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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.