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Finding the Fourth Proportional to 3,884.07, 5,360.07 and 2,115.67

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Solution

The fourth proportional to 3,884.07, 5,360.07 and 2,115.67 is: 2,919.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,884.07 : 5,360.07 = 2,115.67 : x
  2. Step 2: Convert to fraction form
    3,884.07/5,360.07 = 2,115.67/x
  3. Step 3: Cross multiply
    3,884.07x = 5,360.07 × 2,115.67
  4. Step 4: Simplify right side
    3,884.07x = 11,340,152.70
  5. Step 5: Solve for x
    x = 11,340,152.70/3,884.07
  6. Step 6: Final answer
    x = 2,919.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.