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Finding the Fourth Proportional to 8,348.51, 12,520.81 and 3,909.24

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Solution

The fourth proportional to 8,348.51, 12,520.81 and 3,909.24 is: 5,862.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.51 : 12,520.81 = 3,909.24 : x
  2. Step 2: Convert to fraction form
    8,348.51/12,520.81 = 3,909.24/x
  3. Step 3: Cross multiply
    8,348.51x = 12,520.81 × 3,909.24
  4. Step 4: Simplify right side
    8,348.51x = 48,946,856.17
  5. Step 5: Solve for x
    x = 48,946,856.17/8,348.51
  6. Step 6: Final answer
    x = 5,862.94

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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.