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Finding the Fourth Proportional to 3,412.08, 4,708.92 and 1,919.92

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Solution

The fourth proportional to 3,412.08, 4,708.92 and 1,919.92 is: 2,649.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.08 : 4,708.92 = 1,919.92 : x
  2. Step 2: Convert to fraction form
    3,412.08/4,708.92 = 1,919.92/x
  3. Step 3: Cross multiply
    3,412.08x = 4,708.92 × 1,919.92
  4. Step 4: Simplify right side
    3,412.08x = 9,040,749.69
  5. Step 5: Solve for x
    x = 9,040,749.69/3,412.08
  6. Step 6: Final answer
    x = 2,649.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.