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Finding the Fourth Proportional to 8,357.63, 12,539.48 and 3,163.50

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Solution

The fourth proportional to 8,357.63, 12,539.48 and 3,163.50 is: 4,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,357.63 : 12,539.48 = 3,163.50 : x
  2. Step 2: Convert to fraction form
    8,357.63/12,539.48 = 3,163.50/x
  3. Step 3: Cross multiply
    8,357.63x = 12,539.48 × 3,163.50
  4. Step 4: Simplify right side
    8,357.63x = 39,668,629.16
  5. Step 5: Solve for x
    x = 39,668,629.16/8,357.63
  6. Step 6: Final answer
    x = 4,746.40

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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.