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Finding the Fourth Proportional to 2,455.01, 3,682.64 and 811.52

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Solution

The fourth proportional to 2,455.01, 3,682.64 and 811.52 is: 1,217.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.01 : 3,682.64 = 811.52 : x
  2. Step 2: Convert to fraction form
    2,455.01/3,682.64 = 811.52/x
  3. Step 3: Cross multiply
    2,455.01x = 3,682.64 × 811.52
  4. Step 4: Simplify right side
    2,455.01x = 2,988,541.16
  5. Step 5: Solve for x
    x = 2,988,541.16/2,455.01
  6. Step 6: Final answer
    x = 1,217.32

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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.