Home / 4,286.72-6,427.20-2,646.40

Finding the Fourth Proportional to 4,286.72, 6,427.20 and 2,646.40

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Solution

The fourth proportional to 4,286.72, 6,427.20 and 2,646.40 is: 3,967.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.72 : 6,427.20 = 2,646.40 : x
  2. Step 2: Convert to fraction form
    4,286.72/6,427.20 = 2,646.40/x
  3. Step 3: Cross multiply
    4,286.72x = 6,427.20 × 2,646.40
  4. Step 4: Simplify right side
    4,286.72x = 17,008,942.08
  5. Step 5: Solve for x
    x = 17,008,942.08/4,286.72
  6. Step 6: Final answer
    x = 3,967.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.