Home / 5,376.20-7,419.36-3,137.72

Finding the Fourth Proportional to 5,376.20, 7,419.36 and 3,137.72

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Solution

The fourth proportional to 5,376.20, 7,419.36 and 3,137.72 is: 4,330.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,376.20 : 7,419.36 = 3,137.72 : x
  2. Step 2: Convert to fraction form
    5,376.20/7,419.36 = 3,137.72/x
  3. Step 3: Cross multiply
    5,376.20x = 7,419.36 × 3,137.72
  4. Step 4: Simplify right side
    5,376.20x = 23,279,874.26
  5. Step 5: Solve for x
    x = 23,279,874.26/5,376.20
  6. Step 6: Final answer
    x = 4,330.17

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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.