Home / 8,042.64-12,118.75-6,613.80

Finding the Fourth Proportional to 8,042.64, 12,118.75 and 6,613.80

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Solution

The fourth proportional to 8,042.64, 12,118.75 and 6,613.80 is: 9,965.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,042.64 : 12,118.75 = 6,613.80 : x
  2. Step 2: Convert to fraction form
    8,042.64/12,118.75 = 6,613.80/x
  3. Step 3: Cross multiply
    8,042.64x = 12,118.75 × 6,613.80
  4. Step 4: Simplify right side
    8,042.64x = 80,150,988.75
  5. Step 5: Solve for x
    x = 80,150,988.75/8,042.64
  6. Step 6: Final answer
    x = 9,965.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.