Home / 3,989.20-5,984.44-1,178.32

Finding the Fourth Proportional to 3,989.20, 5,984.44 and 1,178.32

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Solution

The fourth proportional to 3,989.20, 5,984.44 and 1,178.32 is: 1,767.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.20 : 5,984.44 = 1,178.32 : x
  2. Step 2: Convert to fraction form
    3,989.20/5,984.44 = 1,178.32/x
  3. Step 3: Cross multiply
    3,989.20x = 5,984.44 × 1,178.32
  4. Step 4: Simplify right side
    3,989.20x = 7,051,570.11
  5. Step 5: Solve for x
    x = 7,051,570.11/3,989.20
  6. Step 6: Final answer
    x = 1,767.67

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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.