Home / 7,143.76-10,715.82-1,949.68

Finding the Fourth Proportional to 7,143.76, 10,715.82 and 1,949.68

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Solution

The fourth proportional to 7,143.76, 10,715.82 and 1,949.68 is: 2,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.76 : 10,715.82 = 1,949.68 : x
  2. Step 2: Convert to fraction form
    7,143.76/10,715.82 = 1,949.68/x
  3. Step 3: Cross multiply
    7,143.76x = 10,715.82 × 1,949.68
  4. Step 4: Simplify right side
    7,143.76x = 20,892,419.94
  5. Step 5: Solve for x
    x = 20,892,419.94/7,143.76
  6. Step 6: Final answer
    x = 2,924.57

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1.5x scale

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.