Home / 8,146.91-12,240.86-5,186.70

Finding the Fourth Proportional to 8,146.91, 12,240.86 and 5,186.70

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Solution

The fourth proportional to 8,146.91, 12,240.86 and 5,186.70 is: 7,793.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146.91 : 12,240.86 = 5,186.70 : x
  2. Step 2: Convert to fraction form
    8,146.91/12,240.86 = 5,186.70/x
  3. Step 3: Cross multiply
    8,146.91x = 12,240.86 × 5,186.70
  4. Step 4: Simplify right side
    8,146.91x = 63,489,642.63
  5. Step 5: Solve for x
    x = 63,489,642.63/8,146.91
  6. Step 6: Final answer
    x = 7,793.10

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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.