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Finding the Fourth Proportional to 8,798.80, 12,142.34 and 4,819.92

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Solution

The fourth proportional to 8,798.80, 12,142.34 and 4,819.92 is: 6,651.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.80 : 12,142.34 = 4,819.92 : x
  2. Step 2: Convert to fraction form
    8,798.80/12,142.34 = 4,819.92/x
  3. Step 3: Cross multiply
    8,798.80x = 12,142.34 × 4,819.92
  4. Step 4: Simplify right side
    8,798.80x = 58,525,107.41
  5. Step 5: Solve for x
    x = 58,525,107.41/8,798.80
  6. Step 6: Final answer
    x = 6,651.49

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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.