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Finding the Fourth Proportional to 3,809.33, 5,256.74 and 2,130.92

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Solution

The fourth proportional to 3,809.33, 5,256.74 and 2,130.92 is: 2,940.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.33 : 5,256.74 = 2,130.92 : x
  2. Step 2: Convert to fraction form
    3,809.33/5,256.74 = 2,130.92/x
  3. Step 3: Cross multiply
    3,809.33x = 5,256.74 × 2,130.92
  4. Step 4: Simplify right side
    3,809.33x = 11,201,692.40
  5. Step 5: Solve for x
    x = 11,201,692.40/3,809.33
  6. Step 6: Final answer
    x = 2,940.59

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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.