Home / 7,331.78-10,117.90-3,974.64

Finding the Fourth Proportional to 7,331.78, 10,117.90 and 3,974.64

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Solution

The fourth proportional to 7,331.78, 10,117.90 and 3,974.64 is: 5,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,331.78 : 10,117.90 = 3,974.64 : x
  2. Step 2: Convert to fraction form
    7,331.78/10,117.90 = 3,974.64/x
  3. Step 3: Cross multiply
    7,331.78x = 10,117.90 × 3,974.64
  4. Step 4: Simplify right side
    7,331.78x = 40,215,048.10
  5. Step 5: Solve for x
    x = 40,215,048.10/7,331.78
  6. Step 6: Final answer
    x = 5,485.03

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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.