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Finding the Fourth Proportional to 8,380.16, 12,574.08 and 3,188.48

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Solution

The fourth proportional to 8,380.16, 12,574.08 and 3,188.48 is: 4,784.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.16 : 12,574.08 = 3,188.48 : x
  2. Step 2: Convert to fraction form
    8,380.16/12,574.08 = 3,188.48/x
  3. Step 3: Cross multiply
    8,380.16x = 12,574.08 × 3,188.48
  4. Step 4: Simplify right side
    8,380.16x = 40,092,202.60
  5. Step 5: Solve for x
    x = 40,092,202.60/8,380.16
  6. Step 6: Final answer
    x = 4,784.18

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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.