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Finding the Fourth Proportional to 8,879.40, 12,252.87 and 4,900.50

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Solution

The fourth proportional to 8,879.40, 12,252.87 and 4,900.50 is: 6,762.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.40 : 12,252.87 = 4,900.50 : x
  2. Step 2: Convert to fraction form
    8,879.40/12,252.87 = 4,900.50/x
  3. Step 3: Cross multiply
    8,879.40x = 12,252.87 × 4,900.50
  4. Step 4: Simplify right side
    8,879.40x = 60,045,189.44
  5. Step 5: Solve for x
    x = 60,045,189.44/8,879.40
  6. Step 6: Final answer
    x = 6,762.30

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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.