Home / 8,439.84-12,668.67-6,897.60

Finding the Fourth Proportional to 8,439.84, 12,668.67 and 6,897.60

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Solution

The fourth proportional to 8,439.84, 12,668.67 and 6,897.60 is: 10,353.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.84 : 12,668.67 = 6,897.60 : x
  2. Step 2: Convert to fraction form
    8,439.84/12,668.67 = 6,897.60/x
  3. Step 3: Cross multiply
    8,439.84x = 12,668.67 × 6,897.60
  4. Step 4: Simplify right side
    8,439.84x = 87,383,418.19
  5. Step 5: Solve for x
    x = 87,383,418.19/8,439.84
  6. Step 6: Final answer
    x = 10,353.68

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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.