Home / 3,188.12-4,399.56-1,771.81

Finding the Fourth Proportional to 3,188.12, 4,399.56 and 1,771.81

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Solution

The fourth proportional to 3,188.12, 4,399.56 and 1,771.81 is: 2,445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.12 : 4,399.56 = 1,771.81 : x
  2. Step 2: Convert to fraction form
    3,188.12/4,399.56 = 1,771.81/x
  3. Step 3: Cross multiply
    3,188.12x = 4,399.56 × 1,771.81
  4. Step 4: Simplify right side
    3,188.12x = 7,795,184.40
  5. Step 5: Solve for x
    x = 7,795,184.40/3,188.12
  6. Step 6: Final answer
    x = 2,445.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.