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Finding the Fourth Proportional to 7,139.44, 10,709.20 and 2,522.44

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Solution

The fourth proportional to 7,139.44, 10,709.20 and 2,522.44 is: 3,783.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.44 : 10,709.20 = 2,522.44 : x
  2. Step 2: Convert to fraction form
    7,139.44/10,709.20 = 2,522.44/x
  3. Step 3: Cross multiply
    7,139.44x = 10,709.20 × 2,522.44
  4. Step 4: Simplify right side
    7,139.44x = 27,013,314.45
  5. Step 5: Solve for x
    x = 27,013,314.45/7,139.44
  6. Step 6: Final answer
    x = 3,783.67

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1.5x scale

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.