Home / 3,431.58-4,735.40-2,105.06

Finding the Fourth Proportional to 3,431.58, 4,735.40 and 2,105.06

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Solution

The fourth proportional to 3,431.58, 4,735.40 and 2,105.06 is: 2,904.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.58 : 4,735.40 = 2,105.06 : x
  2. Step 2: Convert to fraction form
    3,431.58/4,735.40 = 2,105.06/x
  3. Step 3: Cross multiply
    3,431.58x = 4,735.40 × 2,105.06
  4. Step 4: Simplify right side
    3,431.58x = 9,968,301.12
  5. Step 5: Solve for x
    x = 9,968,301.12/3,431.58
  6. Step 6: Final answer
    x = 2,904.87

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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.