Home / 7,338.78-10,127.34-3,981.47

Finding the Fourth Proportional to 7,338.78, 10,127.34 and 3,981.47

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Solution

The fourth proportional to 7,338.78, 10,127.34 and 3,981.47 is: 5,494.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.78 : 10,127.34 = 3,981.47 : x
  2. Step 2: Convert to fraction form
    7,338.78/10,127.34 = 3,981.47/x
  3. Step 3: Cross multiply
    7,338.78x = 10,127.34 × 3,981.47
  4. Step 4: Simplify right side
    7,338.78x = 40,321,649.75
  5. Step 5: Solve for x
    x = 40,321,649.75/7,338.78
  6. Step 6: Final answer
    x = 5,494.33

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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.