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Finding the Fourth Proportional to 4,478.22, 6,714.97 and 1,515.65

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Solution

The fourth proportional to 4,478.22, 6,714.97 and 1,515.65 is: 2,272.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.22 : 6,714.97 = 1,515.65 : x
  2. Step 2: Convert to fraction form
    4,478.22/6,714.97 = 1,515.65/x
  3. Step 3: Cross multiply
    4,478.22x = 6,714.97 × 1,515.65
  4. Step 4: Simplify right side
    4,478.22x = 10,177,506.92
  5. Step 5: Solve for x
    x = 10,177,506.92/4,478.22
  6. Step 6: Final answer
    x = 2,272.67

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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.