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Finding the Fourth Proportional to 3,473.26, 5,209.88 and 1,421.26

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Solution

The fourth proportional to 3,473.26, 5,209.88 and 1,421.26 is: 2,131.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,473.26 : 5,209.88 = 1,421.26 : x
  2. Step 2: Convert to fraction form
    3,473.26/5,209.88 = 1,421.26/x
  3. Step 3: Cross multiply
    3,473.26x = 5,209.88 × 1,421.26
  4. Step 4: Simplify right side
    3,473.26x = 7,404,594.05
  5. Step 5: Solve for x
    x = 7,404,594.05/3,473.26
  6. Step 6: Final answer
    x = 2,131.89

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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.