Home / 8,412.45-11,613.36-6,519.75

Finding the Fourth Proportional to 8,412.45, 11,613.36 and 6,519.75

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Solution

The fourth proportional to 8,412.45, 11,613.36 and 6,519.75 is: 9,000.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.45 : 11,613.36 = 6,519.75 : x
  2. Step 2: Convert to fraction form
    8,412.45/11,613.36 = 6,519.75/x
  3. Step 3: Cross multiply
    8,412.45x = 11,613.36 × 6,519.75
  4. Step 4: Simplify right side
    8,412.45x = 75,716,203.86
  5. Step 5: Solve for x
    x = 75,716,203.86/8,412.45
  6. Step 6: Final answer
    x = 9,000.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.