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Finding the Fourth Proportional to 2,620.87, 3,609.49 and 2,174.67

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Solution

The fourth proportional to 2,620.87, 3,609.49 and 2,174.67 is: 2,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.87 : 3,609.49 = 2,174.67 : x
  2. Step 2: Convert to fraction form
    2,620.87/3,609.49 = 2,174.67/x
  3. Step 3: Cross multiply
    2,620.87x = 3,609.49 × 2,174.67
  4. Step 4: Simplify right side
    2,620.87x = 7,849,447.75
  5. Step 5: Solve for x
    x = 7,849,447.75/2,620.87
  6. Step 6: Final answer
    x = 2,994.98

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1.5x scale

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.