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Finding the Fourth Proportional to 9,940.92, 13,720.52 and 5,750.52

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Solution

The fourth proportional to 9,940.92, 13,720.52 and 5,750.52 is: 7,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.92 : 13,720.52 = 5,750.52 : x
  2. Step 2: Convert to fraction form
    9,940.92/13,720.52 = 5,750.52/x
  3. Step 3: Cross multiply
    9,940.92x = 13,720.52 × 5,750.52
  4. Step 4: Simplify right side
    9,940.92x = 78,900,124.67
  5. Step 5: Solve for x
    x = 78,900,124.67/9,940.92
  6. Step 6: Final answer
    x = 7,936.90

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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.