Home / 3,913.81-5,865.25-2,813.02

Finding the Fourth Proportional to 3,913.81, 5,865.25 and 2,813.02

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Solution

The fourth proportional to 3,913.81, 5,865.25 and 2,813.02 is: 4,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.81 : 5,865.25 = 2,813.02 : x
  2. Step 2: Convert to fraction form
    3,913.81/5,865.25 = 2,813.02/x
  3. Step 3: Cross multiply
    3,913.81x = 5,865.25 × 2,813.02
  4. Step 4: Simplify right side
    3,913.81x = 16,499,065.56
  5. Step 5: Solve for x
    x = 16,499,065.56/3,913.81
  6. Step 6: Final answer
    x = 4,215.60

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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.