Home / 5,419.09-7,477.68-3,181.60

Finding the Fourth Proportional to 5,419.09, 7,477.68 and 3,181.60

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Solution

The fourth proportional to 5,419.09, 7,477.68 and 3,181.60 is: 4,390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.09 : 7,477.68 = 3,181.60 : x
  2. Step 2: Convert to fraction form
    5,419.09/7,477.68 = 3,181.60/x
  3. Step 3: Cross multiply
    5,419.09x = 7,477.68 × 3,181.60
  4. Step 4: Simplify right side
    5,419.09x = 23,790,986.69
  5. Step 5: Solve for x
    x = 23,790,986.69/5,419.09
  6. Step 6: Final answer
    x = 4,390.22

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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.