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Finding the Fourth Proportional to 2,651.37, 3,977.22 and 802.47

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Solution

The fourth proportional to 2,651.37, 3,977.22 and 802.47 is: 1,203.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.37 : 3,977.22 = 802.47 : x
  2. Step 2: Convert to fraction form
    2,651.37/3,977.22 = 802.47/x
  3. Step 3: Cross multiply
    2,651.37x = 3,977.22 × 802.47
  4. Step 4: Simplify right side
    2,651.37x = 3,191,599.73
  5. Step 5: Solve for x
    x = 3,191,599.73/2,651.37
  6. Step 6: Final answer
    x = 1,203.75

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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.