Home / 7,175.81-10,764.34-1,981.69

Finding the Fourth Proportional to 7,175.81, 10,764.34 and 1,981.69

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Solution

The fourth proportional to 7,175.81, 10,764.34 and 1,981.69 is: 2,972.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.81 : 10,764.34 = 1,981.69 : x
  2. Step 2: Convert to fraction form
    7,175.81/10,764.34 = 1,981.69/x
  3. Step 3: Cross multiply
    7,175.81x = 10,764.34 × 1,981.69
  4. Step 4: Simplify right side
    7,175.81x = 21,331,553.07
  5. Step 5: Solve for x
    x = 21,331,553.07/7,175.81
  6. Step 6: Final answer
    x = 2,972.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.