Home / 3,845.68-5,307.06-2,189.68

Finding the Fourth Proportional to 3,845.68, 5,307.06 and 2,189.68

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Solution

The fourth proportional to 3,845.68, 5,307.06 and 2,189.68 is: 3,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.68 : 5,307.06 = 2,189.68 : x
  2. Step 2: Convert to fraction form
    3,845.68/5,307.06 = 2,189.68/x
  3. Step 3: Cross multiply
    3,845.68x = 5,307.06 × 2,189.68
  4. Step 4: Simplify right side
    3,845.68x = 11,620,763.14
  5. Step 5: Solve for x
    x = 11,620,763.14/3,845.68
  6. Step 6: Final answer
    x = 3,021.77

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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.