Home / 3,861.28-5,328.09-2,741.81

Finding the Fourth Proportional to 3,861.28, 5,328.09 and 2,741.81

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Solution

The fourth proportional to 3,861.28, 5,328.09 and 2,741.81 is: 3,783.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.28 : 5,328.09 = 2,741.81 : x
  2. Step 2: Convert to fraction form
    3,861.28/5,328.09 = 2,741.81/x
  3. Step 3: Cross multiply
    3,861.28x = 5,328.09 × 2,741.81
  4. Step 4: Simplify right side
    3,861.28x = 14,608,570.09
  5. Step 5: Solve for x
    x = 14,608,570.09/3,861.28
  6. Step 6: Final answer
    x = 3,783.35

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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.