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Finding the Fourth Proportional to 7,212.57, 9,952.79 and 4,227.99

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Solution

The fourth proportional to 7,212.57, 9,952.79 and 4,227.99 is: 5,834.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.57 : 9,952.79 = 4,227.99 : x
  2. Step 2: Convert to fraction form
    7,212.57/9,952.79 = 4,227.99/x
  3. Step 3: Cross multiply
    7,212.57x = 9,952.79 × 4,227.99
  4. Step 4: Simplify right side
    7,212.57x = 42,080,275.45
  5. Step 5: Solve for x
    x = 42,080,275.45/7,212.57
  6. Step 6: Final answer
    x = 5,834.30

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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.