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Finding the Fourth Proportional to 8,633.63, 12,938.08 and 6,870.69

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Solution

The fourth proportional to 8,633.63, 12,938.08 and 6,870.69 is: 10,296.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.63 : 12,938.08 = 6,870.69 : x
  2. Step 2: Convert to fraction form
    8,633.63/12,938.08 = 6,870.69/x
  3. Step 3: Cross multiply
    8,633.63x = 12,938.08 × 6,870.69
  4. Step 4: Simplify right side
    8,633.63x = 88,893,536.88
  5. Step 5: Solve for x
    x = 88,893,536.88/8,633.63
  6. Step 6: Final answer
    x = 10,296.19

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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.