Home / 3,813.68-5,261.02-2,399.12

Finding the Fourth Proportional to 3,813.68, 5,261.02 and 2,399.12

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Solution

The fourth proportional to 3,813.68, 5,261.02 and 2,399.12 is: 3,309.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.68 : 5,261.02 = 2,399.12 : x
  2. Step 2: Convert to fraction form
    3,813.68/5,261.02 = 2,399.12/x
  3. Step 3: Cross multiply
    3,813.68x = 5,261.02 × 2,399.12
  4. Step 4: Simplify right side
    3,813.68x = 12,621,818.30
  5. Step 5: Solve for x
    x = 12,621,818.30/3,813.68
  6. Step 6: Final answer
    x = 3,309.62

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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.