Home / 2,161.23-3,239.39-1,900.72

Finding the Fourth Proportional to 2,161.23, 3,239.39 and 1,900.72

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Solution

The fourth proportional to 2,161.23, 3,239.39 and 1,900.72 is: 2,848.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.23 : 3,239.39 = 1,900.72 : x
  2. Step 2: Convert to fraction form
    2,161.23/3,239.39 = 1,900.72/x
  3. Step 3: Cross multiply
    2,161.23x = 3,239.39 × 1,900.72
  4. Step 4: Simplify right side
    2,161.23x = 6,157,173.36
  5. Step 5: Solve for x
    x = 6,157,173.36/2,161.23
  6. Step 6: Final answer
    x = 2,848.92

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1.5x scale

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.