Home / 8,667.92-13,001.58-3,120.03

Finding the Fourth Proportional to 8,667.92, 13,001.58 and 3,120.03

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Solution

The fourth proportional to 8,667.92, 13,001.58 and 3,120.03 is: 4,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.92 : 13,001.58 = 3,120.03 : x
  2. Step 2: Convert to fraction form
    8,667.92/13,001.58 = 3,120.03/x
  3. Step 3: Cross multiply
    8,667.92x = 13,001.58 × 3,120.03
  4. Step 4: Simplify right side
    8,667.92x = 40,565,319.65
  5. Step 5: Solve for x
    x = 40,565,319.65/8,667.92
  6. Step 6: Final answer
    x = 4,679.94

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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.