Home / 8,191.59-12,280.11-3,192.81

Finding the Fourth Proportional to 8,191.59, 12,280.11 and 3,192.81

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Solution

The fourth proportional to 8,191.59, 12,280.11 and 3,192.81 is: 4,786.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.59 : 12,280.11 = 3,192.81 : x
  2. Step 2: Convert to fraction form
    8,191.59/12,280.11 = 3,192.81/x
  3. Step 3: Cross multiply
    8,191.59x = 12,280.11 × 3,192.81
  4. Step 4: Simplify right side
    8,191.59x = 39,208,058.01
  5. Step 5: Solve for x
    x = 39,208,058.01/8,191.59
  6. Step 6: Final answer
    x = 4,786.38

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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.