Home / 8,436.84-12,662.97-4,279.71

Finding the Fourth Proportional to 8,436.84, 12,662.97 and 4,279.71

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Solution

The fourth proportional to 8,436.84, 12,662.97 and 4,279.71 is: 6,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.84 : 12,662.97 = 4,279.71 : x
  2. Step 2: Convert to fraction form
    8,436.84/12,662.97 = 4,279.71/x
  3. Step 3: Cross multiply
    8,436.84x = 12,662.97 × 4,279.71
  4. Step 4: Simplify right side
    8,436.84x = 54,193,839.34
  5. Step 5: Solve for x
    x = 54,193,839.34/8,436.84
  6. Step 6: Final answer
    x = 6,423.48

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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.