Home / 8,179.39-11,287.61-4,642.66

Finding the Fourth Proportional to 8,179.39, 11,287.61 and 4,642.66

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Solution

The fourth proportional to 8,179.39, 11,287.61 and 4,642.66 is: 6,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.39 : 11,287.61 = 4,642.66 : x
  2. Step 2: Convert to fraction form
    8,179.39/11,287.61 = 4,642.66/x
  3. Step 3: Cross multiply
    8,179.39x = 11,287.61 × 4,642.66
  4. Step 4: Simplify right side
    8,179.39x = 52,404,501.42
  5. Step 5: Solve for x
    x = 52,404,501.42/8,179.39
  6. Step 6: Final answer
    x = 6,406.90

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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.