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Finding the Fourth Proportional to 2,772.41, 4,158.63 and 824.63

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Solution

The fourth proportional to 2,772.41, 4,158.63 and 824.63 is: 1,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.41 : 4,158.63 = 824.63 : x
  2. Step 2: Convert to fraction form
    2,772.41/4,158.63 = 824.63/x
  3. Step 3: Cross multiply
    2,772.41x = 4,158.63 × 824.63
  4. Step 4: Simplify right side
    2,772.41x = 3,429,310.26
  5. Step 5: Solve for x
    x = 3,429,310.26/2,772.41
  6. Step 6: Final answer
    x = 1,236.94

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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.