Home / 2,529.87-3,489.72-1,969.45

Finding the Fourth Proportional to 2,529.87, 3,489.72 and 1,969.45

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Solution

The fourth proportional to 2,529.87, 3,489.72 and 1,969.45 is: 2,716.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.87 : 3,489.72 = 1,969.45 : x
  2. Step 2: Convert to fraction form
    2,529.87/3,489.72 = 1,969.45/x
  3. Step 3: Cross multiply
    2,529.87x = 3,489.72 × 1,969.45
  4. Step 4: Simplify right side
    2,529.87x = 6,872,819.21
  5. Step 5: Solve for x
    x = 6,872,819.21/2,529.87
  6. Step 6: Final answer
    x = 2,716.67

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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.