Home / 5,686.45-7,847.64-3,168.56

Finding the Fourth Proportional to 5,686.45, 7,847.64 and 3,168.56

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Solution

The fourth proportional to 5,686.45, 7,847.64 and 3,168.56 is: 4,372.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,686.45 : 7,847.64 = 3,168.56 : x
  2. Step 2: Convert to fraction form
    5,686.45/7,847.64 = 3,168.56/x
  3. Step 3: Cross multiply
    5,686.45x = 7,847.64 × 3,168.56
  4. Step 4: Simplify right side
    5,686.45x = 24,865,737.82
  5. Step 5: Solve for x
    x = 24,865,737.82/5,686.45
  6. Step 6: Final answer
    x = 4,372.81

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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.