Home / 8,117.58-12,181.83-3,186.63

Finding the Fourth Proportional to 8,117.58, 12,181.83 and 3,186.63

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Solution

The fourth proportional to 8,117.58, 12,181.83 and 3,186.63 is: 4,782.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.58 : 12,181.83 = 3,186.63 : x
  2. Step 2: Convert to fraction form
    8,117.58/12,181.83 = 3,186.63/x
  3. Step 3: Cross multiply
    8,117.58x = 12,181.83 × 3,186.63
  4. Step 4: Simplify right side
    8,117.58x = 38,818,984.93
  5. Step 5: Solve for x
    x = 38,818,984.93/8,117.58
  6. Step 6: Final answer
    x = 4,782.09

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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.