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Finding the Fourth Proportional to 8,879.74, 12,254.09 and 4,900.86

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Solution

The fourth proportional to 8,879.74, 12,254.09 and 4,900.86 is: 6,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.74 : 12,254.09 = 4,900.86 : x
  2. Step 2: Convert to fraction form
    8,879.74/12,254.09 = 4,900.86/x
  3. Step 3: Cross multiply
    8,879.74x = 12,254.09 × 4,900.86
  4. Step 4: Simplify right side
    8,879.74x = 60,055,579.52
  5. Step 5: Solve for x
    x = 60,055,579.52/8,879.74
  6. Step 6: Final answer
    x = 6,763.21

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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.