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Finding the Fourth Proportional to 2,561.09, 3,841.76 and 712.19

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Solution

The fourth proportional to 2,561.09, 3,841.76 and 712.19 is: 1,068.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561.09 : 3,841.76 = 712.19 : x
  2. Step 2: Convert to fraction form
    2,561.09/3,841.76 = 712.19/x
  3. Step 3: Cross multiply
    2,561.09x = 3,841.76 × 712.19
  4. Step 4: Simplify right side
    2,561.09x = 2,736,074.44
  5. Step 5: Solve for x
    x = 2,736,074.44/2,561.09
  6. Step 6: Final answer
    x = 1,068.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.