Home / 10,876.34-16,314.53-2,978.28

Finding the Fourth Proportional to 10,876.34, 16,314.53 and 2,978.28

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Solution

The fourth proportional to 10,876.34, 16,314.53 and 2,978.28 is: 4,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.34 : 16,314.53 = 2,978.28 : x
  2. Step 2: Convert to fraction form
    10,876.34/16,314.53 = 2,978.28/x
  3. Step 3: Cross multiply
    10,876.34x = 16,314.53 × 2,978.28
  4. Step 4: Simplify right side
    10,876.34x = 48,589,223.52
  5. Step 5: Solve for x
    x = 48,589,223.52/10,876.34
  6. Step 6: Final answer
    x = 4,467.42

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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.