Home / 5,161.58-7,128.83-3,480.09

Finding the Fourth Proportional to 5,161.58, 7,128.83 and 3,480.09

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Solution

The fourth proportional to 5,161.58, 7,128.83 and 3,480.09 is: 4,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.58 : 7,128.83 = 3,480.09 : x
  2. Step 2: Convert to fraction form
    5,161.58/7,128.83 = 3,480.09/x
  3. Step 3: Cross multiply
    5,161.58x = 7,128.83 × 3,480.09
  4. Step 4: Simplify right side
    5,161.58x = 24,808,969.99
  5. Step 5: Solve for x
    x = 24,808,969.99/5,161.58
  6. Step 6: Final answer
    x = 4,806.47

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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.