Home / 5,409.79-8,111.58-2,119.03

Finding the Fourth Proportional to 5,409.79, 8,111.58 and 2,119.03

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Solution

The fourth proportional to 5,409.79, 8,111.58 and 2,119.03 is: 3,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.79 : 8,111.58 = 2,119.03 : x
  2. Step 2: Convert to fraction form
    5,409.79/8,111.58 = 2,119.03/x
  3. Step 3: Cross multiply
    5,409.79x = 8,111.58 × 2,119.03
  4. Step 4: Simplify right side
    5,409.79x = 17,188,681.37
  5. Step 5: Solve for x
    x = 17,188,681.37/5,409.79
  6. Step 6: Final answer
    x = 3,177.33

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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.