Home / 8,129.91-11,220.74-5,262.18

Finding the Fourth Proportional to 8,129.91, 11,220.74 and 5,262.18

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Solution

The fourth proportional to 8,129.91, 11,220.74 and 5,262.18 is: 7,262.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.91 : 11,220.74 = 5,262.18 : x
  2. Step 2: Convert to fraction form
    8,129.91/11,220.74 = 5,262.18/x
  3. Step 3: Cross multiply
    8,129.91x = 11,220.74 × 5,262.18
  4. Step 4: Simplify right side
    8,129.91x = 59,045,553.61
  5. Step 5: Solve for x
    x = 59,045,553.61/8,129.91
  6. Step 6: Final answer
    x = 7,262.76

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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.