Home / 2,190.47-3,289.62-2,102.38

Finding the Fourth Proportional to 2,190.47, 3,289.62 and 2,102.38

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Solution

The fourth proportional to 2,190.47, 3,289.62 and 2,102.38 is: 3,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.47 : 3,289.62 = 2,102.38 : x
  2. Step 2: Convert to fraction form
    2,190.47/3,289.62 = 2,102.38/x
  3. Step 3: Cross multiply
    2,190.47x = 3,289.62 × 2,102.38
  4. Step 4: Simplify right side
    2,190.47x = 6,916,031.30
  5. Step 5: Solve for x
    x = 6,916,031.30/2,190.47
  6. Step 6: Final answer
    x = 3,157.33

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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.