Home / 6,426.60-8,863.56-3,908.64

Finding the Fourth Proportional to 6,426.60, 8,863.56 and 3,908.64

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Solution

The fourth proportional to 6,426.60, 8,863.56 and 3,908.64 is: 5,390.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,426.60 : 8,863.56 = 3,908.64 : x
  2. Step 2: Convert to fraction form
    6,426.60/8,863.56 = 3,908.64/x
  3. Step 3: Cross multiply
    6,426.60x = 8,863.56 × 3,908.64
  4. Step 4: Simplify right side
    6,426.60x = 34,644,465.16
  5. Step 5: Solve for x
    x = 34,644,465.16/6,426.60
  6. Step 6: Final answer
    x = 5,390.79

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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.