Home / 6,521.49-9,778.59-2,138.58

Finding the Fourth Proportional to 6,521.49, 9,778.59 and 2,138.58

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Solution

The fourth proportional to 6,521.49, 9,778.59 and 2,138.58 is: 3,206.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,521.49 : 9,778.59 = 2,138.58 : x
  2. Step 2: Convert to fraction form
    6,521.49/9,778.59 = 2,138.58/x
  3. Step 3: Cross multiply
    6,521.49x = 9,778.59 × 2,138.58
  4. Step 4: Simplify right side
    6,521.49x = 20,912,297.00
  5. Step 5: Solve for x
    x = 20,912,297.00/6,521.49
  6. Step 6: Final answer
    x = 3,206.67

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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.