Home / 2,135.28-3,196.68-1,930.32

Finding the Fourth Proportional to 2,135.28, 3,196.68 and 1,930.32

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Solution

The fourth proportional to 2,135.28, 3,196.68 and 1,930.32 is: 2,889.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.28 : 3,196.68 = 1,930.32 : x
  2. Step 2: Convert to fraction form
    2,135.28/3,196.68 = 1,930.32/x
  3. Step 3: Cross multiply
    2,135.28x = 3,196.68 × 1,930.32
  4. Step 4: Simplify right side
    2,135.28x = 6,170,615.34
  5. Step 5: Solve for x
    x = 6,170,615.34/2,135.28
  6. Step 6: Final answer
    x = 2,889.84

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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.