Home / 8,129.86-11,220.69-5,262.10

Finding the Fourth Proportional to 8,129.86, 11,220.69 and 5,262.10

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Solution

The fourth proportional to 8,129.86, 11,220.69 and 5,262.10 is: 7,262.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.86 : 11,220.69 = 5,262.10 : x
  2. Step 2: Convert to fraction form
    8,129.86/11,220.69 = 5,262.10/x
  3. Step 3: Cross multiply
    8,129.86x = 11,220.69 × 5,262.10
  4. Step 4: Simplify right side
    8,129.86x = 59,044,392.85
  5. Step 5: Solve for x
    x = 59,044,392.85/8,129.86
  6. Step 6: Final answer
    x = 7,262.66

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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.