Home / 7,120.68-10,684.44-3,660.36

Finding the Fourth Proportional to 7,120.68, 10,684.44 and 3,660.36

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Solution

The fourth proportional to 7,120.68, 10,684.44 and 3,660.36 is: 5,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.68 : 10,684.44 = 3,660.36 : x
  2. Step 2: Convert to fraction form
    7,120.68/10,684.44 = 3,660.36/x
  3. Step 3: Cross multiply
    7,120.68x = 10,684.44 × 3,660.36
  4. Step 4: Simplify right side
    7,120.68x = 39,108,896.80
  5. Step 5: Solve for x
    x = 39,108,896.80/7,120.68
  6. Step 6: Final answer
    x = 5,492.30

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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.