Home / 3,185.77-4,777.51-1,105.22

Finding the Fourth Proportional to 3,185.77, 4,777.51 and 1,105.22

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Solution

The fourth proportional to 3,185.77, 4,777.51 and 1,105.22 is: 1,657.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.77 : 4,777.51 = 1,105.22 : x
  2. Step 2: Convert to fraction form
    3,185.77/4,777.51 = 1,105.22/x
  3. Step 3: Cross multiply
    3,185.77x = 4,777.51 × 1,105.22
  4. Step 4: Simplify right side
    3,185.77x = 5,280,199.60
  5. Step 5: Solve for x
    x = 5,280,199.60/3,185.77
  6. Step 6: Final answer
    x = 1,657.43

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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.