Home / 3,447.21-4,755.63-2,120.43

Finding the Fourth Proportional to 3,447.21, 4,755.63 and 2,120.43

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Solution

The fourth proportional to 3,447.21, 4,755.63 and 2,120.43 is: 2,925.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.21 : 4,755.63 = 2,120.43 : x
  2. Step 2: Convert to fraction form
    3,447.21/4,755.63 = 2,120.43/x
  3. Step 3: Cross multiply
    3,447.21x = 4,755.63 × 2,120.43
  4. Step 4: Simplify right side
    3,447.21x = 10,083,980.52
  5. Step 5: Solve for x
    x = 10,083,980.52/3,447.21
  6. Step 6: Final answer
    x = 2,925.26

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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.