Home / 3,412.14-4,708.44-1,920.12

Finding the Fourth Proportional to 3,412.14, 4,708.44 and 1,920.12

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Solution

The fourth proportional to 3,412.14, 4,708.44 and 1,920.12 is: 2,649.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.14 : 4,708.44 = 1,920.12 : x
  2. Step 2: Convert to fraction form
    3,412.14/4,708.44 = 1,920.12/x
  3. Step 3: Cross multiply
    3,412.14x = 4,708.44 × 1,920.12
  4. Step 4: Simplify right side
    3,412.14x = 9,040,769.81
  5. Step 5: Solve for x
    x = 9,040,769.81/3,412.14
  6. Step 6: Final answer
    x = 2,649.59

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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.