Home / 3,608.40-5,409.36-1,878.24

Finding the Fourth Proportional to 3,608.40, 5,409.36 and 1,878.24

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Solution

The fourth proportional to 3,608.40, 5,409.36 and 1,878.24 is: 2,815.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.40 : 5,409.36 = 1,878.24 : x
  2. Step 2: Convert to fraction form
    3,608.40/5,409.36 = 1,878.24/x
  3. Step 3: Cross multiply
    3,608.40x = 5,409.36 × 1,878.24
  4. Step 4: Simplify right side
    3,608.40x = 10,160,076.33
  5. Step 5: Solve for x
    x = 10,160,076.33/3,608.40
  6. Step 6: Final answer
    x = 2,815.67

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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.