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Finding the Fourth Proportional to 9,355.68, 12,911.04 and 6,217.56

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Solution

The fourth proportional to 9,355.68, 12,911.04 and 6,217.56 is: 8,580.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.68 : 12,911.04 = 6,217.56 : x
  2. Step 2: Convert to fraction form
    9,355.68/12,911.04 = 6,217.56/x
  3. Step 3: Cross multiply
    9,355.68x = 12,911.04 × 6,217.56
  4. Step 4: Simplify right side
    9,355.68x = 80,275,165.86
  5. Step 5: Solve for x
    x = 80,275,165.86/9,355.68
  6. Step 6: Final answer
    x = 8,580.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.