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Finding the Fourth Proportional to 7,662.60, 11,483.98 and 3,215.23

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Solution

The fourth proportional to 7,662.60, 11,483.98 and 3,215.23 is: 4,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,662.60 : 11,483.98 = 3,215.23 : x
  2. Step 2: Convert to fraction form
    7,662.60/11,483.98 = 3,215.23/x
  3. Step 3: Cross multiply
    7,662.60x = 11,483.98 × 3,215.23
  4. Step 4: Simplify right side
    7,662.60x = 36,923,600.27
  5. Step 5: Solve for x
    x = 36,923,600.27/7,662.60
  6. Step 6: Final answer
    x = 4,818.68

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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.