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Finding the Fourth Proportional to 10,878.66, 16,317.96 and 3,087.48

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Solution

The fourth proportional to 10,878.66, 16,317.96 and 3,087.48 is: 4,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.66 : 16,317.96 = 3,087.48 : x
  2. Step 2: Convert to fraction form
    10,878.66/16,317.96 = 3,087.48/x
  3. Step 3: Cross multiply
    10,878.66x = 16,317.96 × 3,087.48
  4. Step 4: Simplify right side
    10,878.66x = 50,381,375.14
  5. Step 5: Solve for x
    x = 50,381,375.14/10,878.66
  6. Step 6: Final answer
    x = 4,631.21

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1.5x scale

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.