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Finding the Fourth Proportional to 8,458.55, 11,672.99 and 5,479.57

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Solution

The fourth proportional to 8,458.55, 11,672.99 and 5,479.57 is: 7,561.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.55 : 11,672.99 = 5,479.57 : x
  2. Step 2: Convert to fraction form
    8,458.55/11,672.99 = 5,479.57/x
  3. Step 3: Cross multiply
    8,458.55x = 11,672.99 × 5,479.57
  4. Step 4: Simplify right side
    8,458.55x = 63,962,973.56
  5. Step 5: Solve for x
    x = 63,962,973.56/8,458.55
  6. Step 6: Final answer
    x = 7,561.93

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