Home / 1,674.85-2,313.50-1,286.67

Finding the Fourth Proportional to 1,674.85, 2,313.50 and 1,286.67

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Solution

The fourth proportional to 1,674.85, 2,313.50 and 1,286.67 is: 1,777.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.85 : 2,313.50 = 1,286.67 : x
  2. Step 2: Convert to fraction form
    1,674.85/2,313.50 = 1,286.67/x
  3. Step 3: Cross multiply
    1,674.85x = 2,313.50 × 1,286.67
  4. Step 4: Simplify right side
    1,674.85x = 2,976,711.05
  5. Step 5: Solve for x
    x = 2,976,711.05/1,674.85
  6. Step 6: Final answer
    x = 1,777.30

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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.