Home / 6,317.92-8,719.68-3,960.28

Finding the Fourth Proportional to 6,317.92, 8,719.68 and 3,960.28

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Solution

The fourth proportional to 6,317.92, 8,719.68 and 3,960.28 is: 5,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,317.92 : 8,719.68 = 3,960.28 : x
  2. Step 2: Convert to fraction form
    6,317.92/8,719.68 = 3,960.28/x
  3. Step 3: Cross multiply
    6,317.92x = 8,719.68 × 3,960.28
  4. Step 4: Simplify right side
    6,317.92x = 34,532,374.31
  5. Step 5: Solve for x
    x = 34,532,374.31/6,317.92
  6. Step 6: Final answer
    x = 5,465.78

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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.