Home / 7,161.51-9,881.60-3,974.42

Finding the Fourth Proportional to 7,161.51, 9,881.60 and 3,974.42

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Solution

The fourth proportional to 7,161.51, 9,881.60 and 3,974.42 is: 5,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.51 : 9,881.60 = 3,974.42 : x
  2. Step 2: Convert to fraction form
    7,161.51/9,881.60 = 3,974.42/x
  3. Step 3: Cross multiply
    7,161.51x = 9,881.60 × 3,974.42
  4. Step 4: Simplify right side
    7,161.51x = 39,273,577.92
  5. Step 5: Solve for x
    x = 39,273,577.92/7,161.51
  6. Step 6: Final answer
    x = 5,483.98

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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.