Home / 7,018.11-10,522.31-3,120.39

Finding the Fourth Proportional to 7,018.11, 10,522.31 and 3,120.39

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Solution

The fourth proportional to 7,018.11, 10,522.31 and 3,120.39 is: 4,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.11 : 10,522.31 = 3,120.39 : x
  2. Step 2: Convert to fraction form
    7,018.11/10,522.31 = 3,120.39/x
  3. Step 3: Cross multiply
    7,018.11x = 10,522.31 × 3,120.39
  4. Step 4: Simplify right side
    7,018.11x = 32,833,695.30
  5. Step 5: Solve for x
    x = 32,833,695.30/7,018.11
  6. Step 6: Final answer
    x = 4,678.42

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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.