Home / 3,421.09-5,128.39-1,474.66

Finding the Fourth Proportional to 3,421.09, 5,128.39 and 1,474.66

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Solution

The fourth proportional to 3,421.09, 5,128.39 and 1,474.66 is: 2,210.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.09 : 5,128.39 = 1,474.66 : x
  2. Step 2: Convert to fraction form
    3,421.09/5,128.39 = 1,474.66/x
  3. Step 3: Cross multiply
    3,421.09x = 5,128.39 × 1,474.66
  4. Step 4: Simplify right side
    3,421.09x = 7,562,631.60
  5. Step 5: Solve for x
    x = 7,562,631.60/3,421.09
  6. Step 6: Final answer
    x = 2,210.59

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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.