Home / 8,319.21-12,478.67-2,079.26

Finding the Fourth Proportional to 8,319.21, 12,478.67 and 2,079.26

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Solution

The fourth proportional to 8,319.21, 12,478.67 and 2,079.26 is: 3,118.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.21 : 12,478.67 = 2,079.26 : x
  2. Step 2: Convert to fraction form
    8,319.21/12,478.67 = 2,079.26/x
  3. Step 3: Cross multiply
    8,319.21x = 12,478.67 × 2,079.26
  4. Step 4: Simplify right side
    8,319.21x = 25,946,399.38
  5. Step 5: Solve for x
    x = 25,946,399.38/8,319.21
  6. Step 6: Final answer
    x = 3,118.85

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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.