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Finding the Fourth Proportional to 7,225.43, 9,971.22 and 4,081.61

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Solution

The fourth proportional to 7,225.43, 9,971.22 and 4,081.61 is: 5,632.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.43 : 9,971.22 = 4,081.61 : x
  2. Step 2: Convert to fraction form
    7,225.43/9,971.22 = 4,081.61/x
  3. Step 3: Cross multiply
    7,225.43x = 9,971.22 × 4,081.61
  4. Step 4: Simplify right side
    7,225.43x = 40,698,581.41
  5. Step 5: Solve for x
    x = 40,698,581.41/7,225.43
  6. Step 6: Final answer
    x = 5,632.69

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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.