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Finding the Fourth Proportional to 6,286.60, 9,429.90 and 5,451.40

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Solution

The fourth proportional to 6,286.60, 9,429.90 and 5,451.40 is: 8,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,286.60 : 9,429.90 = 5,451.40 : x
  2. Step 2: Convert to fraction form
    6,286.60/9,429.90 = 5,451.40/x
  3. Step 3: Cross multiply
    6,286.60x = 9,429.90 × 5,451.40
  4. Step 4: Simplify right side
    6,286.60x = 51,406,156.86
  5. Step 5: Solve for x
    x = 51,406,156.86/6,286.60
  6. Step 6: Final answer
    x = 8,177.10

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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.