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Finding the Fourth Proportional to 9,355.68, 12,909.96 and 5,816.16

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Solution

The fourth proportional to 9,355.68, 12,909.96 and 5,816.16 is: 8,025.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.68 : 12,909.96 = 5,816.16 : x
  2. Step 2: Convert to fraction form
    9,355.68/12,909.96 = 5,816.16/x
  3. Step 3: Cross multiply
    9,355.68x = 12,909.96 × 5,816.16
  4. Step 4: Simplify right side
    9,355.68x = 75,086,392.95
  5. Step 5: Solve for x
    x = 75,086,392.95/9,355.68
  6. Step 6: Final answer
    x = 8,025.75

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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.