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Finding the Fourth Proportional to 3,408.07, 5,112.10 and 1,356.07

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Solution

The fourth proportional to 3,408.07, 5,112.10 and 1,356.07 is: 2,034.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.07 : 5,112.10 = 1,356.07 : x
  2. Step 2: Convert to fraction form
    3,408.07/5,112.10 = 1,356.07/x
  3. Step 3: Cross multiply
    3,408.07x = 5,112.10 × 1,356.07
  4. Step 4: Simplify right side
    3,408.07x = 6,932,339.89
  5. Step 5: Solve for x
    x = 6,932,339.89/3,408.07
  6. Step 6: Final answer
    x = 2,034.10

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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.