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Finding the Fourth Proportional to 7,191.54, 10,772.73 and 3,721.50

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Solution

The fourth proportional to 7,191.54, 10,772.73 and 3,721.50 is: 5,574.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.54 : 10,772.73 = 3,721.50 : x
  2. Step 2: Convert to fraction form
    7,191.54/10,772.73 = 3,721.50/x
  3. Step 3: Cross multiply
    7,191.54x = 10,772.73 × 3,721.50
  4. Step 4: Simplify right side
    7,191.54x = 40,090,714.70
  5. Step 5: Solve for x
    x = 40,090,714.70/7,191.54
  6. Step 6: Final answer
    x = 5,574.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.