Home / 8,721.48-12,035.62-4,945.38

Finding the Fourth Proportional to 8,721.48, 12,035.62 and 4,945.38

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Solution

The fourth proportional to 8,721.48, 12,035.62 and 4,945.38 is: 6,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.48 : 12,035.62 = 4,945.38 : x
  2. Step 2: Convert to fraction form
    8,721.48/12,035.62 = 4,945.38/x
  3. Step 3: Cross multiply
    8,721.48x = 12,035.62 × 4,945.38
  4. Step 4: Simplify right side
    8,721.48x = 59,520,714.44
  5. Step 5: Solve for x
    x = 59,520,714.44/8,721.48
  6. Step 6: Final answer
    x = 6,824.61

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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.