Home / 3,406.86-4,698.58-2,878.34

Finding the Fourth Proportional to 3,406.86, 4,698.58 and 2,878.34

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Solution

The fourth proportional to 3,406.86, 4,698.58 and 2,878.34 is: 3,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,406.86 : 4,698.58 = 2,878.34 : x
  2. Step 2: Convert to fraction form
    3,406.86/4,698.58 = 2,878.34/x
  3. Step 3: Cross multiply
    3,406.86x = 4,698.58 × 2,878.34
  4. Step 4: Simplify right side
    3,406.86x = 13,524,110.76
  5. Step 5: Solve for x
    x = 13,524,110.76/3,406.86
  6. Step 6: Final answer
    x = 3,969.67

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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.