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Finding the Fourth Proportional to 2,415.12, 3,622.24 and 954.72

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Solution

The fourth proportional to 2,415.12, 3,622.24 and 954.72 is: 1,431.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.12 : 3,622.24 = 954.72 : x
  2. Step 2: Convert to fraction form
    2,415.12/3,622.24 = 954.72/x
  3. Step 3: Cross multiply
    2,415.12x = 3,622.24 × 954.72
  4. Step 4: Simplify right side
    2,415.12x = 3,458,224.97
  5. Step 5: Solve for x
    x = 3,458,224.97/2,415.12
  6. Step 6: Final answer
    x = 1,431.91

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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.