Home / 3,421.50-5,130.89-1,229.64

Finding the Fourth Proportional to 3,421.50, 5,130.89 and 1,229.64

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Solution

The fourth proportional to 3,421.50, 5,130.89 and 1,229.64 is: 1,843.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.50 : 5,130.89 = 1,229.64 : x
  2. Step 2: Convert to fraction form
    3,421.50/5,130.89 = 1,229.64/x
  3. Step 3: Cross multiply
    3,421.50x = 5,130.89 × 1,229.64
  4. Step 4: Simplify right side
    3,421.50x = 6,309,147.58
  5. Step 5: Solve for x
    x = 6,309,147.58/3,421.50
  6. Step 6: Final answer
    x = 1,843.97

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1.5x scale

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.