Home / 8,191.68-12,285.12-2,346.72

Finding the Fourth Proportional to 8,191.68, 12,285.12 and 2,346.72

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Solution

The fourth proportional to 8,191.68, 12,285.12 and 2,346.72 is: 3,519.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.68 : 12,285.12 = 2,346.72 : x
  2. Step 2: Convert to fraction form
    8,191.68/12,285.12 = 2,346.72/x
  3. Step 3: Cross multiply
    8,191.68x = 12,285.12 × 2,346.72
  4. Step 4: Simplify right side
    8,191.68x = 28,829,736.81
  5. Step 5: Solve for x
    x = 28,829,736.81/8,191.68
  6. Step 6: Final answer
    x = 3,519.39

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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.