Home / 8,403.75-12,611.70-3,209.63

Finding the Fourth Proportional to 8,403.75, 12,611.70 and 3,209.63

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Solution

The fourth proportional to 8,403.75, 12,611.70 and 3,209.63 is: 4,816.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.75 : 12,611.70 = 3,209.63 : x
  2. Step 2: Convert to fraction form
    8,403.75/12,611.70 = 3,209.63/x
  3. Step 3: Cross multiply
    8,403.75x = 12,611.70 × 3,209.63
  4. Step 4: Simplify right side
    8,403.75x = 40,478,827.61
  5. Step 5: Solve for x
    x = 40,478,827.61/8,403.75
  6. Step 6: Final answer
    x = 4,816.76

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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.