Home / 3,245.29-4,478.59-1,986.32

Finding the Fourth Proportional to 3,245.29, 4,478.59 and 1,986.32

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Solution

The fourth proportional to 3,245.29, 4,478.59 and 1,986.32 is: 2,741.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,245.29 : 4,478.59 = 1,986.32 : x
  2. Step 2: Convert to fraction form
    3,245.29/4,478.59 = 1,986.32/x
  3. Step 3: Cross multiply
    3,245.29x = 4,478.59 × 1,986.32
  4. Step 4: Simplify right side
    3,245.29x = 8,895,912.89
  5. Step 5: Solve for x
    x = 8,895,912.89/3,245.29
  6. Step 6: Final answer
    x = 2,741.18

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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.