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Finding the Fourth Proportional to 11,114.40, 16,673.20 and 3,719.20

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Solution

The fourth proportional to 11,114.40, 16,673.20 and 3,719.20 is: 5,579.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,114.40 : 16,673.20 = 3,719.20 : x
  2. Step 2: Convert to fraction form
    11,114.40/16,673.20 = 3,719.20/x
  3. Step 3: Cross multiply
    11,114.40x = 16,673.20 × 3,719.20
  4. Step 4: Simplify right side
    11,114.40x = 62,010,965.44
  5. Step 5: Solve for x
    x = 62,010,965.44/11,114.40
  6. Step 6: Final answer
    x = 5,579.34

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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.