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Finding the Fourth Proportional to 7,189.92, 9,922.14 and 4,205.04

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Solution

The fourth proportional to 7,189.92, 9,922.14 and 4,205.04 is: 5,802.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.92 : 9,922.14 = 4,205.04 : x
  2. Step 2: Convert to fraction form
    7,189.92/9,922.14 = 4,205.04/x
  3. Step 3: Cross multiply
    7,189.92x = 9,922.14 × 4,205.04
  4. Step 4: Simplify right side
    7,189.92x = 41,722,995.59
  5. Step 5: Solve for x
    x = 41,722,995.59/7,189.92
  6. Step 6: Final answer
    x = 5,802.98

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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.