Home / 3,412.21-4,708.57-1,920.38

Finding the Fourth Proportional to 3,412.21, 4,708.57 and 1,920.38

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Solution

The fourth proportional to 3,412.21, 4,708.57 and 1,920.38 is: 2,649.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.21 : 4,708.57 = 1,920.38 : x
  2. Step 2: Convert to fraction form
    3,412.21/4,708.57 = 1,920.38/x
  3. Step 3: Cross multiply
    3,412.21x = 4,708.57 × 1,920.38
  4. Step 4: Simplify right side
    3,412.21x = 9,042,215.31
  5. Step 5: Solve for x
    x = 9,042,215.31/3,412.21
  6. Step 6: Final answer
    x = 2,649.96

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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.