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Finding the Fourth Proportional to 8,871.90, 12,243.15 and 4,893

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Solution

The fourth proportional to 8,871.90, 12,243.15 and 4,893 is: 6,752.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.90 : 12,243.15 = 4,893 : x
  2. Step 2: Convert to fraction form
    8,871.90/12,243.15 = 4,893/x
  3. Step 3: Cross multiply
    8,871.90x = 12,243.15 × 4,893
  4. Step 4: Simplify right side
    8,871.90x = 59,905,732.95
  5. Step 5: Solve for x
    x = 59,905,732.95/8,871.90
  6. Step 6: Final answer
    x = 6,752.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.