Home / 8,438.48-12,660.03-3,693.78

Finding the Fourth Proportional to 8,438.48, 12,660.03 and 3,693.78

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Solution

The fourth proportional to 8,438.48, 12,660.03 and 3,693.78 is: 5,541.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.48 : 12,660.03 = 3,693.78 : x
  2. Step 2: Convert to fraction form
    8,438.48/12,660.03 = 3,693.78/x
  3. Step 3: Cross multiply
    8,438.48x = 12,660.03 × 3,693.78
  4. Step 4: Simplify right side
    8,438.48x = 46,763,283.84
  5. Step 5: Solve for x
    x = 46,763,283.84/8,438.48
  6. Step 6: Final answer
    x = 5,541.67

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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.