Home / 8,624.12-12,938.49-3,078.04

Finding the Fourth Proportional to 8,624.12, 12,938.49 and 3,078.04

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Solution

The fourth proportional to 8,624.12, 12,938.49 and 3,078.04 is: 4,617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.12 : 12,938.49 = 3,078.04 : x
  2. Step 2: Convert to fraction form
    8,624.12/12,938.49 = 3,078.04/x
  3. Step 3: Cross multiply
    8,624.12x = 12,938.49 × 3,078.04
  4. Step 4: Simplify right side
    8,624.12x = 39,825,189.76
  5. Step 5: Solve for x
    x = 39,825,189.76/8,624.12
  6. Step 6: Final answer
    x = 4,617.88

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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.