Home / 8,421.72-12,626.52-3,976.92

Finding the Fourth Proportional to 8,421.72, 12,626.52 and 3,976.92

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Solution

The fourth proportional to 8,421.72, 12,626.52 and 3,976.92 is: 5,962.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.72 : 12,626.52 = 3,976.92 : x
  2. Step 2: Convert to fraction form
    8,421.72/12,626.52 = 3,976.92/x
  3. Step 3: Cross multiply
    8,421.72x = 12,626.52 × 3,976.92
  4. Step 4: Simplify right side
    8,421.72x = 50,214,659.92
  5. Step 5: Solve for x
    x = 50,214,659.92/8,421.72
  6. Step 6: Final answer
    x = 5,962.52

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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.