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Finding the Fourth Proportional to 8,403.63, 12,609.69 and 3,476.80

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Solution

The fourth proportional to 8,403.63, 12,609.69 and 3,476.80 is: 5,216.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.63 : 12,609.69 = 3,476.80 : x
  2. Step 2: Convert to fraction form
    8,403.63/12,609.69 = 3,476.80/x
  3. Step 3: Cross multiply
    8,403.63x = 12,609.69 × 3,476.80
  4. Step 4: Simplify right side
    8,403.63x = 43,841,392.47
  5. Step 5: Solve for x
    x = 43,841,392.47/8,403.63
  6. Step 6: Final answer
    x = 5,216.96

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1.5x scale

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.