Home / 3,185.96-4,778.08-2,145.36

Finding the Fourth Proportional to 3,185.96, 4,778.08 and 2,145.36

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Solution

The fourth proportional to 3,185.96, 4,778.08 and 2,145.36 is: 3,217.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.96 : 4,778.08 = 2,145.36 : x
  2. Step 2: Convert to fraction form
    3,185.96/4,778.08 = 2,145.36/x
  3. Step 3: Cross multiply
    3,185.96x = 4,778.08 × 2,145.36
  4. Step 4: Simplify right side
    3,185.96x = 10,250,701.71
  5. Step 5: Solve for x
    x = 10,250,701.71/3,185.96
  6. Step 6: Final answer
    x = 3,217.46

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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.