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Finding the Fourth Proportional to 8,813.57, 13,219.95 and 2,239.88

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Solution

The fourth proportional to 8,813.57, 13,219.95 and 2,239.88 is: 3,359.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.57 : 13,219.95 = 2,239.88 : x
  2. Step 2: Convert to fraction form
    8,813.57/13,219.95 = 2,239.88/x
  3. Step 3: Cross multiply
    8,813.57x = 13,219.95 × 2,239.88
  4. Step 4: Simplify right side
    8,813.57x = 29,611,101.61
  5. Step 5: Solve for x
    x = 29,611,101.61/8,813.57
  6. Step 6: Final answer
    x = 3,359.72

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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.