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Finding the Fourth Proportional to 7,161.08, 9,881.34 and 3,974.34

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Solution

The fourth proportional to 7,161.08, 9,881.34 and 3,974.34 is: 5,484.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.08 : 9,881.34 = 3,974.34 : x
  2. Step 2: Convert to fraction form
    7,161.08/9,881.34 = 3,974.34/x
  3. Step 3: Cross multiply
    7,161.08x = 9,881.34 × 3,974.34
  4. Step 4: Simplify right side
    7,161.08x = 39,271,804.82
  5. Step 5: Solve for x
    x = 39,271,804.82/7,161.08
  6. Step 6: Final answer
    x = 5,484.06

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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.