Home / 1,190.32-1,778.21-1,147.12

Finding the Fourth Proportional to 1,190.32, 1,778.21 and 1,147.12

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Solution

The fourth proportional to 1,190.32, 1,778.21 and 1,147.12 is: 1,713.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.32 : 1,778.21 = 1,147.12 : x
  2. Step 2: Convert to fraction form
    1,190.32/1,778.21 = 1,147.12/x
  3. Step 3: Cross multiply
    1,190.32x = 1,778.21 × 1,147.12
  4. Step 4: Simplify right side
    1,190.32x = 2,039,820.26
  5. Step 5: Solve for x
    x = 2,039,820.26/1,190.32
  6. Step 6: Final answer
    x = 1,713.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.