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Finding the Fourth Proportional to 8,643.96, 12,965.94 and 2,403.72

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Solution

The fourth proportional to 8,643.96, 12,965.94 and 2,403.72 is: 3,605.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.96 : 12,965.94 = 2,403.72 : x
  2. Step 2: Convert to fraction form
    8,643.96/12,965.94 = 2,403.72/x
  3. Step 3: Cross multiply
    8,643.96x = 12,965.94 × 2,403.72
  4. Step 4: Simplify right side
    8,643.96x = 31,166,489.30
  5. Step 5: Solve for x
    x = 31,166,489.30/8,643.96
  6. Step 6: Final answer
    x = 3,605.58

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Similar ratio
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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.