Home / 3,168.87-4,369.75-1,909.68

Finding the Fourth Proportional to 3,168.87, 4,369.75 and 1,909.68

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Solution

The fourth proportional to 3,168.87, 4,369.75 and 1,909.68 is: 2,633.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.87 : 4,369.75 = 1,909.68 : x
  2. Step 2: Convert to fraction form
    3,168.87/4,369.75 = 1,909.68/x
  3. Step 3: Cross multiply
    3,168.87x = 4,369.75 × 1,909.68
  4. Step 4: Simplify right side
    3,168.87x = 8,344,803.02
  5. Step 5: Solve for x
    x = 8,344,803.02/3,168.87
  6. Step 6: Final answer
    x = 2,633.37

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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.