Home / 3,428.64-5,145.06-1,480.80

Finding the Fourth Proportional to 3,428.64, 5,145.06 and 1,480.80

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Solution

The fourth proportional to 3,428.64, 5,145.06 and 1,480.80 is: 2,222.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.64 : 5,145.06 = 1,480.80 : x
  2. Step 2: Convert to fraction form
    3,428.64/5,145.06 = 1,480.80/x
  3. Step 3: Cross multiply
    3,428.64x = 5,145.06 × 1,480.80
  4. Step 4: Simplify right side
    3,428.64x = 7,618,804.85
  5. Step 5: Solve for x
    x = 7,618,804.85/3,428.64
  6. Step 6: Final answer
    x = 2,222.11

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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.