Home / 7,143.50-10,715.38-1,949.52

Finding the Fourth Proportional to 7,143.50, 10,715.38 and 1,949.52

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Solution

The fourth proportional to 7,143.50, 10,715.38 and 1,949.52 is: 2,924.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.50 : 10,715.38 = 1,949.52 : x
  2. Step 2: Convert to fraction form
    7,143.50/10,715.38 = 1,949.52/x
  3. Step 3: Cross multiply
    7,143.50x = 10,715.38 × 1,949.52
  4. Step 4: Simplify right side
    7,143.50x = 20,889,847.62
  5. Step 5: Solve for x
    x = 20,889,847.62/7,143.50
  6. Step 6: Final answer
    x = 2,924.32

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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.