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Finding the Fourth Proportional to 7,188.08, 9,917.61 and 4,204.65

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Solution

The fourth proportional to 7,188.08, 9,917.61 and 4,204.65 is: 5,801.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.08 : 9,917.61 = 4,204.65 : x
  2. Step 2: Convert to fraction form
    7,188.08/9,917.61 = 4,204.65/x
  3. Step 3: Cross multiply
    7,188.08x = 9,917.61 × 4,204.65
  4. Step 4: Simplify right side
    7,188.08x = 41,700,078.89
  5. Step 5: Solve for x
    x = 41,700,078.89/7,188.08
  6. Step 6: Final answer
    x = 5,801.29

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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.