Home / 5,161.11-7,118.70-3,172.76

Finding the Fourth Proportional to 5,161.11, 7,118.70 and 3,172.76

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Solution

The fourth proportional to 5,161.11, 7,118.70 and 3,172.76 is: 4,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.11 : 7,118.70 = 3,172.76 : x
  2. Step 2: Convert to fraction form
    5,161.11/7,118.70 = 3,172.76/x
  3. Step 3: Cross multiply
    5,161.11x = 7,118.70 × 3,172.76
  4. Step 4: Simplify right side
    5,161.11x = 22,585,908.82
  5. Step 5: Solve for x
    x = 22,585,908.82/5,161.11
  6. Step 6: Final answer
    x = 4,376.18

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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.