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Finding the Fourth Proportional to 7,043.57, 9,722.07 and 4,212.89

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Solution

The fourth proportional to 7,043.57, 9,722.07 and 4,212.89 is: 5,814.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,043.57 : 9,722.07 = 4,212.89 : x
  2. Step 2: Convert to fraction form
    7,043.57/9,722.07 = 4,212.89/x
  3. Step 3: Cross multiply
    7,043.57x = 9,722.07 × 4,212.89
  4. Step 4: Simplify right side
    7,043.57x = 40,958,035.79
  5. Step 5: Solve for x
    x = 40,958,035.79/7,043.57
  6. Step 6: Final answer
    x = 5,814.95

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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.