Home / 3,257.15-4,495.60-2,120.81

Finding the Fourth Proportional to 3,257.15, 4,495.60 and 2,120.81

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Solution

The fourth proportional to 3,257.15, 4,495.60 and 2,120.81 is: 2,927.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,257.15 : 4,495.60 = 2,120.81 : x
  2. Step 2: Convert to fraction form
    3,257.15/4,495.60 = 2,120.81/x
  3. Step 3: Cross multiply
    3,257.15x = 4,495.60 × 2,120.81
  4. Step 4: Simplify right side
    3,257.15x = 9,534,290.96
  5. Step 5: Solve for x
    x = 9,534,290.96/3,257.15
  6. Step 6: Final answer
    x = 2,927.19

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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.