Home / 5,409.30-8,113.92-2,120.07

Finding the Fourth Proportional to 5,409.30, 8,113.92 and 2,120.07

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Solution

The fourth proportional to 5,409.30, 8,113.92 and 2,120.07 is: 3,180.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.30 : 8,113.92 = 2,120.07 : x
  2. Step 2: Convert to fraction form
    5,409.30/8,113.92 = 2,120.07/x
  3. Step 3: Cross multiply
    5,409.30x = 8,113.92 × 2,120.07
  4. Step 4: Simplify right side
    5,409.30x = 17,202,037.80
  5. Step 5: Solve for x
    x = 17,202,037.80/5,409.30
  6. Step 6: Final answer
    x = 3,180.09

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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.