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Finding the Fourth Proportional to 5,671.78, 8,511.55 and 1,973.97

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Solution

The fourth proportional to 5,671.78, 8,511.55 and 1,973.97 is: 2,962.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,671.78 : 8,511.55 = 1,973.97 : x
  2. Step 2: Convert to fraction form
    5,671.78/8,511.55 = 1,973.97/x
  3. Step 3: Cross multiply
    5,671.78x = 8,511.55 × 1,973.97
  4. Step 4: Simplify right side
    5,671.78x = 16,801,539.42
  5. Step 5: Solve for x
    x = 16,801,539.42/5,671.78
  6. Step 6: Final answer
    x = 2,962.31

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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.