Home / 8,318.12-12,488.12-7,630.43

Finding the Fourth Proportional to 8,318.12, 12,488.12 and 7,630.43

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Solution

The fourth proportional to 8,318.12, 12,488.12 and 7,630.43 is: 11,455.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.12 : 12,488.12 = 7,630.43 : x
  2. Step 2: Convert to fraction form
    8,318.12/12,488.12 = 7,630.43/x
  3. Step 3: Cross multiply
    8,318.12x = 12,488.12 × 7,630.43
  4. Step 4: Simplify right side
    8,318.12x = 95,289,747.17
  5. Step 5: Solve for x
    x = 95,289,747.17/8,318.12
  6. Step 6: Final answer
    x = 11,455.68

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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.