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Finding the Fourth Proportional to 9,355.68, 12,910.64 and 5,376.68

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Solution

The fourth proportional to 9,355.68, 12,910.64 and 5,376.68 is: 7,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.68 : 12,910.64 = 5,376.68 : x
  2. Step 2: Convert to fraction form
    9,355.68/12,910.64 = 5,376.68/x
  3. Step 3: Cross multiply
    9,355.68x = 12,910.64 × 5,376.68
  4. Step 4: Simplify right side
    9,355.68x = 69,416,379.88
  5. Step 5: Solve for x
    x = 69,416,379.88/9,355.68
  6. Step 6: Final answer
    x = 7,419.70

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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.