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Finding the Fourth Proportional to 8,924.92, 12,316.42 and 5,388.16

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Solution

The fourth proportional to 8,924.92, 12,316.42 and 5,388.16 is: 7,435.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,924.92 : 12,316.42 = 5,388.16 : x
  2. Step 2: Convert to fraction form
    8,924.92/12,316.42 = 5,388.16/x
  3. Step 3: Cross multiply
    8,924.92x = 12,316.42 × 5,388.16
  4. Step 4: Simplify right side
    8,924.92x = 66,362,841.59
  5. Step 5: Solve for x
    x = 66,362,841.59/8,924.92
  6. Step 6: Final answer
    x = 7,435.68

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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.