Home / 7,138.94-10,709.98-2,141.11

Finding the Fourth Proportional to 7,138.94, 10,709.98 and 2,141.11

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Solution

The fourth proportional to 7,138.94, 10,709.98 and 2,141.11 is: 3,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.94 : 10,709.98 = 2,141.11 : x
  2. Step 2: Convert to fraction form
    7,138.94/10,709.98 = 2,141.11/x
  3. Step 3: Cross multiply
    7,138.94x = 10,709.98 × 2,141.11
  4. Step 4: Simplify right side
    7,138.94x = 22,931,245.28
  5. Step 5: Solve for x
    x = 22,931,245.28/7,138.94
  6. Step 6: Final answer
    x = 3,212.14

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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.