Home / 2,378.45-3,568.21-917.68

Finding the Fourth Proportional to 2,378.45, 3,568.21 and 917.68

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Solution

The fourth proportional to 2,378.45, 3,568.21 and 917.68 is: 1,376.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.45 : 3,568.21 = 917.68 : x
  2. Step 2: Convert to fraction form
    2,378.45/3,568.21 = 917.68/x
  3. Step 3: Cross multiply
    2,378.45x = 3,568.21 × 917.68
  4. Step 4: Simplify right side
    2,378.45x = 3,274,474.95
  5. Step 5: Solve for x
    x = 3,274,474.95/2,378.45
  6. Step 6: Final answer
    x = 1,376.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.