Home / 3,809.05-5,256.46-2,130.45

Finding the Fourth Proportional to 3,809.05, 5,256.46 and 2,130.45

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Solution

The fourth proportional to 3,809.05, 5,256.46 and 2,130.45 is: 2,940.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.05 : 5,256.46 = 2,130.45 : x
  2. Step 2: Convert to fraction form
    3,809.05/5,256.46 = 2,130.45/x
  3. Step 3: Cross multiply
    3,809.05x = 5,256.46 × 2,130.45
  4. Step 4: Simplify right side
    3,809.05x = 11,198,608.16
  5. Step 5: Solve for x
    x = 11,198,608.16/3,809.05
  6. Step 6: Final answer
    x = 2,940.00

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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.