Home / 6,639.40-9,159.33-3,982.24

Finding the Fourth Proportional to 6,639.40, 9,159.33 and 3,982.24

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Solution

The fourth proportional to 6,639.40, 9,159.33 and 3,982.24 is: 5,493.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.40 : 9,159.33 = 3,982.24 : x
  2. Step 2: Convert to fraction form
    6,639.40/9,159.33 = 3,982.24/x
  3. Step 3: Cross multiply
    6,639.40x = 9,159.33 × 3,982.24
  4. Step 4: Simplify right side
    6,639.40x = 36,474,650.30
  5. Step 5: Solve for x
    x = 36,474,650.30/6,639.40
  6. Step 6: Final answer
    x = 5,493.67

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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.