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Finding the Fourth Proportional to 2,415.72, 3,621.42 and 2,063.64

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Solution

The fourth proportional to 2,415.72, 3,621.42 and 2,063.64 is: 3,093.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.72 : 3,621.42 = 2,063.64 : x
  2. Step 2: Convert to fraction form
    2,415.72/3,621.42 = 2,063.64/x
  3. Step 3: Cross multiply
    2,415.72x = 3,621.42 × 2,063.64
  4. Step 4: Simplify right side
    2,415.72x = 7,473,307.17
  5. Step 5: Solve for x
    x = 7,473,307.17/2,415.72
  6. Step 6: Final answer
    x = 3,093.61

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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.