Home / 3,090.76-4,636.32-1,993.12

Finding the Fourth Proportional to 3,090.76, 4,636.32 and 1,993.12

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Solution

The fourth proportional to 3,090.76, 4,636.32 and 1,993.12 is: 2,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.76 : 4,636.32 = 1,993.12 : x
  2. Step 2: Convert to fraction form
    3,090.76/4,636.32 = 1,993.12/x
  3. Step 3: Cross multiply
    3,090.76x = 4,636.32 × 1,993.12
  4. Step 4: Simplify right side
    3,090.76x = 9,240,742.12
  5. Step 5: Solve for x
    x = 9,240,742.12/3,090.76
  6. Step 6: Final answer
    x = 2,989.80

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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.