Home / 8,215.04-12,313.67-3,279.25

Finding the Fourth Proportional to 8,215.04, 12,313.67 and 3,279.25

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Solution

The fourth proportional to 8,215.04, 12,313.67 and 3,279.25 is: 4,915.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.04 : 12,313.67 = 3,279.25 : x
  2. Step 2: Convert to fraction form
    8,215.04/12,313.67 = 3,279.25/x
  3. Step 3: Cross multiply
    8,215.04x = 12,313.67 × 3,279.25
  4. Step 4: Simplify right side
    8,215.04x = 40,379,619.79
  5. Step 5: Solve for x
    x = 40,379,619.79/8,215.04
  6. Step 6: Final answer
    x = 4,915.33

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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.