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Finding the Fourth Proportional to 8,396.31, 11,586.65 and 4,619.47

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Solution

The fourth proportional to 8,396.31, 11,586.65 and 4,619.47 is: 6,374.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,396.31 : 11,586.65 = 4,619.47 : x
  2. Step 2: Convert to fraction form
    8,396.31/11,586.65 = 4,619.47/x
  3. Step 3: Cross multiply
    8,396.31x = 11,586.65 × 4,619.47
  4. Step 4: Simplify right side
    8,396.31x = 53,524,124.14
  5. Step 5: Solve for x
    x = 53,524,124.14/8,396.31
  6. Step 6: Final answer
    x = 6,374.72

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1.5x scale

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.