Home / 3,890.81-5,839.85-1,812.24

Finding the Fourth Proportional to 3,890.81, 5,839.85 and 1,812.24

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Solution

The fourth proportional to 3,890.81, 5,839.85 and 1,812.24 is: 2,720.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.81 : 5,839.85 = 1,812.24 : x
  2. Step 2: Convert to fraction form
    3,890.81/5,839.85 = 1,812.24/x
  3. Step 3: Cross multiply
    3,890.81x = 5,839.85 × 1,812.24
  4. Step 4: Simplify right side
    3,890.81x = 10,583,236.19
  5. Step 5: Solve for x
    x = 10,583,236.19/3,890.81
  6. Step 6: Final answer
    x = 2,720.06

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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.