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Finding the Fourth Proportional to 7,650.68, 11,479.28 and 4,321.43

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Solution

The fourth proportional to 7,650.68, 11,479.28 and 4,321.43 is: 6,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,650.68 : 11,479.28 = 4,321.43 : x
  2. Step 2: Convert to fraction form
    7,650.68/11,479.28 = 4,321.43/x
  3. Step 3: Cross multiply
    7,650.68x = 11,479.28 × 4,321.43
  4. Step 4: Simplify right side
    7,650.68x = 49,606,847.57
  5. Step 5: Solve for x
    x = 49,606,847.57/7,650.68
  6. Step 6: Final answer
    x = 6,483.98

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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.