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Finding the Fourth Proportional to 8,559.45, 12,817.31 and 7,582.59

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Solution

The fourth proportional to 8,559.45, 12,817.31 and 7,582.59 is: 11,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.45 : 12,817.31 = 7,582.59 : x
  2. Step 2: Convert to fraction form
    8,559.45/12,817.31 = 7,582.59/x
  3. Step 3: Cross multiply
    8,559.45x = 12,817.31 × 7,582.59
  4. Step 4: Simplify right side
    8,559.45x = 97,188,368.72
  5. Step 5: Solve for x
    x = 97,188,368.72/8,559.45
  6. Step 6: Final answer
    x = 11,354.51

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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.