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Finding the Fourth Proportional to 10,651, 15,979.10 and 3,355

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Solution

The fourth proportional to 10,651, 15,979.10 and 3,355 is: 5,033.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,651 : 15,979.10 = 3,355 : x
  2. Step 2: Convert to fraction form
    10,651/15,979.10 = 3,355/x
  3. Step 3: Cross multiply
    10,651x = 15,979.10 × 3,355
  4. Step 4: Simplify right side
    10,651x = 53,609,880.50
  5. Step 5: Solve for x
    x = 53,609,880.50/10,651
  6. Step 6: Final answer
    x = 5,033.32

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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.