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Finding the Fourth Proportional to 5,562.77, 8,340.21 and 2,787.45

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Solution

The fourth proportional to 5,562.77, 8,340.21 and 2,787.45 is: 4,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,562.77 : 8,340.21 = 2,787.45 : x
  2. Step 2: Convert to fraction form
    5,562.77/8,340.21 = 2,787.45/x
  3. Step 3: Cross multiply
    5,562.77x = 8,340.21 × 2,787.45
  4. Step 4: Simplify right side
    5,562.77x = 23,247,918.36
  5. Step 5: Solve for x
    x = 23,247,918.36/5,562.77
  6. Step 6: Final answer
    x = 4,179.20

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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.