Home / 2,636.85-3,957.20-1,945.38

Finding the Fourth Proportional to 2,636.85, 3,957.20 and 1,945.38

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Solution

The fourth proportional to 2,636.85, 3,957.20 and 1,945.38 is: 2,919.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636.85 : 3,957.20 = 1,945.38 : x
  2. Step 2: Convert to fraction form
    2,636.85/3,957.20 = 1,945.38/x
  3. Step 3: Cross multiply
    2,636.85x = 3,957.20 × 1,945.38
  4. Step 4: Simplify right side
    2,636.85x = 7,698,248.01
  5. Step 5: Solve for x
    x = 7,698,248.01/2,636.85
  6. Step 6: Final answer
    x = 2,919.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.