Home / 8,279.13-12,420.69-4,382.67

Finding the Fourth Proportional to 8,279.13, 12,420.69 and 4,382.67

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Solution

The fourth proportional to 8,279.13, 12,420.69 and 4,382.67 is: 6,575.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.13 : 12,420.69 = 4,382.67 : x
  2. Step 2: Convert to fraction form
    8,279.13/12,420.69 = 4,382.67/x
  3. Step 3: Cross multiply
    8,279.13x = 12,420.69 × 4,382.67
  4. Step 4: Simplify right side
    8,279.13x = 54,435,785.44
  5. Step 5: Solve for x
    x = 54,435,785.44/8,279.13
  6. Step 6: Final answer
    x = 6,575.06

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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.