Home / 1,629.40-2,247.68-1,235.76

Finding the Fourth Proportional to 1,629.40, 2,247.68 and 1,235.76

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Solution

The fourth proportional to 1,629.40, 2,247.68 and 1,235.76 is: 1,704.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.40 : 2,247.68 = 1,235.76 : x
  2. Step 2: Convert to fraction form
    1,629.40/2,247.68 = 1,235.76/x
  3. Step 3: Cross multiply
    1,629.40x = 2,247.68 × 1,235.76
  4. Step 4: Simplify right side
    1,629.40x = 2,777,593.04
  5. Step 5: Solve for x
    x = 2,777,593.04/1,629.40
  6. Step 6: Final answer
    x = 1,704.67

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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.