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Finding the Fourth Proportional to 3,405.07, 5,107.60 and 1,353.07

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Solution

The fourth proportional to 3,405.07, 5,107.60 and 1,353.07 is: 2,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.07 : 5,107.60 = 1,353.07 : x
  2. Step 2: Convert to fraction form
    3,405.07/5,107.60 = 1,353.07/x
  3. Step 3: Cross multiply
    3,405.07x = 5,107.60 × 1,353.07
  4. Step 4: Simplify right side
    3,405.07x = 6,910,914.79
  5. Step 5: Solve for x
    x = 6,910,914.79/3,405.07
  6. Step 6: Final answer
    x = 2,029.60

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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.