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Finding the Fourth Proportional to 7,168.45, 9,890.73 and 4,182.58

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Solution

The fourth proportional to 7,168.45, 9,890.73 and 4,182.58 is: 5,770.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.45 : 9,890.73 = 4,182.58 : x
  2. Step 2: Convert to fraction form
    7,168.45/9,890.73 = 4,182.58/x
  3. Step 3: Cross multiply
    7,168.45x = 9,890.73 × 4,182.58
  4. Step 4: Simplify right side
    7,168.45x = 41,368,769.48
  5. Step 5: Solve for x
    x = 41,368,769.48/7,168.45
  6. Step 6: Final answer
    x = 5,770.95

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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.