Home / 6,380.42-8,804.34-3,989.93

Finding the Fourth Proportional to 6,380.42, 8,804.34 and 3,989.93

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Solution

The fourth proportional to 6,380.42, 8,804.34 and 3,989.93 is: 5,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,380.42 : 8,804.34 = 3,989.93 : x
  2. Step 2: Convert to fraction form
    6,380.42/8,804.34 = 3,989.93/x
  3. Step 3: Cross multiply
    6,380.42x = 8,804.34 × 3,989.93
  4. Step 4: Simplify right side
    6,380.42x = 35,128,656.27
  5. Step 5: Solve for x
    x = 35,128,656.27/6,380.42
  6. Step 6: Final answer
    x = 5,505.70

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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.