Home / 5,740.40-7,921.89-3,222.69

Finding the Fourth Proportional to 5,740.40, 7,921.89 and 3,222.69

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Solution

The fourth proportional to 5,740.40, 7,921.89 and 3,222.69 is: 4,447.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,740.40 : 7,921.89 = 3,222.69 : x
  2. Step 2: Convert to fraction form
    5,740.40/7,921.89 = 3,222.69/x
  3. Step 3: Cross multiply
    5,740.40x = 7,921.89 × 3,222.69
  4. Step 4: Simplify right side
    5,740.40x = 25,529,795.68
  5. Step 5: Solve for x
    x = 25,529,795.68/5,740.40
  6. Step 6: Final answer
    x = 4,447.39

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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.