Home / 3,790.64-5,686.48-1,942.72

Finding the Fourth Proportional to 3,790.64, 5,686.48 and 1,942.72

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Solution

The fourth proportional to 3,790.64, 5,686.48 and 1,942.72 is: 2,914.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.64 : 5,686.48 = 1,942.72 : x
  2. Step 2: Convert to fraction form
    3,790.64/5,686.48 = 1,942.72/x
  3. Step 3: Cross multiply
    3,790.64x = 5,686.48 × 1,942.72
  4. Step 4: Simplify right side
    3,790.64x = 11,047,238.43
  5. Step 5: Solve for x
    x = 11,047,238.43/3,790.64
  6. Step 6: Final answer
    x = 2,914.35

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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.