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Finding the Fourth Proportional to 8,476.05, 12,719.58 and 6,400.83

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Solution

The fourth proportional to 8,476.05, 12,719.58 and 6,400.83 is: 9,605.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,476.05 : 12,719.58 = 6,400.83 : x
  2. Step 2: Convert to fraction form
    8,476.05/12,719.58 = 6,400.83/x
  3. Step 3: Cross multiply
    8,476.05x = 12,719.58 × 6,400.83
  4. Step 4: Simplify right side
    8,476.05x = 81,415,869.25
  5. Step 5: Solve for x
    x = 81,415,869.25/8,476.05
  6. Step 6: Final answer
    x = 9,605.40

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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.