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Finding the Fourth Proportional to 8,633.88, 12,948 and 2,789.10

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Solution

The fourth proportional to 8,633.88, 12,948 and 2,789.10 is: 4,182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.88 : 12,948 = 2,789.10 : x
  2. Step 2: Convert to fraction form
    8,633.88/12,948 = 2,789.10/x
  3. Step 3: Cross multiply
    8,633.88x = 12,948 × 2,789.10
  4. Step 4: Simplify right side
    8,633.88x = 36,113,266.80
  5. Step 5: Solve for x
    x = 36,113,266.80/8,633.88
  6. Step 6: Final answer
    x = 4,182.74

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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.