Home / 3,678.29-5,076.07-1,999.72

Finding the Fourth Proportional to 3,678.29, 5,076.07 and 1,999.72

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Solution

The fourth proportional to 3,678.29, 5,076.07 and 1,999.72 is: 2,759.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.29 : 5,076.07 = 1,999.72 : x
  2. Step 2: Convert to fraction form
    3,678.29/5,076.07 = 1,999.72/x
  3. Step 3: Cross multiply
    3,678.29x = 5,076.07 × 1,999.72
  4. Step 4: Simplify right side
    3,678.29x = 10,150,701.01
  5. Step 5: Solve for x
    x = 10,150,701.01/3,678.29
  6. Step 6: Final answer
    x = 2,759.62

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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.