Home / 4,120.87-5,687.14-2,328.67

Finding the Fourth Proportional to 4,120.87, 5,687.14 and 2,328.67

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Solution

The fourth proportional to 4,120.87, 5,687.14 and 2,328.67 is: 3,213.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.87 : 5,687.14 = 2,328.67 : x
  2. Step 2: Convert to fraction form
    4,120.87/5,687.14 = 2,328.67/x
  3. Step 3: Cross multiply
    4,120.87x = 5,687.14 × 2,328.67
  4. Step 4: Simplify right side
    4,120.87x = 13,243,472.30
  5. Step 5: Solve for x
    x = 13,243,472.30/4,120.87
  6. Step 6: Final answer
    x = 3,213.76

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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.