Home / 3,813.81-5,675.03-3,800.85

Finding the Fourth Proportional to 3,813.81, 5,675.03 and 3,800.85

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Solution

The fourth proportional to 3,813.81, 5,675.03 and 3,800.85 is: 5,655.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.81 : 5,675.03 = 3,800.85 : x
  2. Step 2: Convert to fraction form
    3,813.81/5,675.03 = 3,800.85/x
  3. Step 3: Cross multiply
    3,813.81x = 5,675.03 × 3,800.85
  4. Step 4: Simplify right side
    3,813.81x = 21,569,947.28
  5. Step 5: Solve for x
    x = 21,569,947.28/3,813.81
  6. Step 6: Final answer
    x = 5,655.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.