Home / 6,320.15-8,719.26-3,928.43

Finding the Fourth Proportional to 6,320.15, 8,719.26 and 3,928.43

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Solution

The fourth proportional to 6,320.15, 8,719.26 and 3,928.43 is: 5,419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,320.15 : 8,719.26 = 3,928.43 : x
  2. Step 2: Convert to fraction form
    6,320.15/8,719.26 = 3,928.43/x
  3. Step 3: Cross multiply
    6,320.15x = 8,719.26 × 3,928.43
  4. Step 4: Simplify right side
    6,320.15x = 34,252,960.58
  5. Step 5: Solve for x
    x = 34,252,960.58/6,320.15
  6. Step 6: Final answer
    x = 5,419.64

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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.