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Finding the Fourth Proportional to 7,338.66, 10,127.22 and 3,981.48

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Solution

The fourth proportional to 7,338.66, 10,127.22 and 3,981.48 is: 5,494.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.66 : 10,127.22 = 3,981.48 : x
  2. Step 2: Convert to fraction form
    7,338.66/10,127.22 = 3,981.48/x
  3. Step 3: Cross multiply
    7,338.66x = 10,127.22 × 3,981.48
  4. Step 4: Simplify right side
    7,338.66x = 40,321,323.89
  5. Step 5: Solve for x
    x = 40,321,323.89/7,338.66
  6. Step 6: Final answer
    x = 5,494.37

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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.