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Finding the Fourth Proportional to 9,940.57, 14,910.92 and 2,920.70

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Solution

The fourth proportional to 9,940.57, 14,910.92 and 2,920.70 is: 4,381.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.57 : 14,910.92 = 2,920.70 : x
  2. Step 2: Convert to fraction form
    9,940.57/14,910.92 = 2,920.70/x
  3. Step 3: Cross multiply
    9,940.57x = 14,910.92 × 2,920.70
  4. Step 4: Simplify right side
    9,940.57x = 43,550,309.44
  5. Step 5: Solve for x
    x = 43,550,309.44/9,940.57
  6. Step 6: Final answer
    x = 4,381.07

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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.