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Finding the Fourth Proportional to 8,833.80, 13,251.30 and 2,990.88

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Solution

The fourth proportional to 8,833.80, 13,251.30 and 2,990.88 is: 4,486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,833.80 : 13,251.30 = 2,990.88 : x
  2. Step 2: Convert to fraction form
    8,833.80/13,251.30 = 2,990.88/x
  3. Step 3: Cross multiply
    8,833.80x = 13,251.30 × 2,990.88
  4. Step 4: Simplify right side
    8,833.80x = 39,633,048.14
  5. Step 5: Solve for x
    x = 39,633,048.14/8,833.80
  6. Step 6: Final answer
    x = 4,486.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.