Home / 3,421.63-5,132.46-1,200.35

Finding the Fourth Proportional to 3,421.63, 5,132.46 and 1,200.35

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Solution

The fourth proportional to 3,421.63, 5,132.46 and 1,200.35 is: 1,800.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.63 : 5,132.46 = 1,200.35 : x
  2. Step 2: Convert to fraction form
    3,421.63/5,132.46 = 1,200.35/x
  3. Step 3: Cross multiply
    3,421.63x = 5,132.46 × 1,200.35
  4. Step 4: Simplify right side
    3,421.63x = 6,160,765.69
  5. Step 5: Solve for x
    x = 6,160,765.69/3,421.63
  6. Step 6: Final answer
    x = 1,800.54

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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.