Home / 3,185.28-4,775.85-1,105.13

Finding the Fourth Proportional to 3,185.28, 4,775.85 and 1,105.13

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Solution

The fourth proportional to 3,185.28, 4,775.85 and 1,105.13 is: 1,656.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.28 : 4,775.85 = 1,105.13 : x
  2. Step 2: Convert to fraction form
    3,185.28/4,775.85 = 1,105.13/x
  3. Step 3: Cross multiply
    3,185.28x = 4,775.85 × 1,105.13
  4. Step 4: Simplify right side
    3,185.28x = 5,277,911.23
  5. Step 5: Solve for x
    x = 5,277,911.23/3,185.28
  6. Step 6: Final answer
    x = 1,656.97

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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.