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Finding the Fourth Proportional to 8,870.70, 13,305.85 and 2,207.17

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Solution

The fourth proportional to 8,870.70, 13,305.85 and 2,207.17 is: 3,310.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.70 : 13,305.85 = 2,207.17 : x
  2. Step 2: Convert to fraction form
    8,870.70/13,305.85 = 2,207.17/x
  3. Step 3: Cross multiply
    8,870.70x = 13,305.85 × 2,207.17
  4. Step 4: Simplify right side
    8,870.70x = 29,368,272.94
  5. Step 5: Solve for x
    x = 29,368,272.94/8,870.70
  6. Step 6: Final answer
    x = 3,310.71

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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.