Home / 7,143.09-10,718.69-3,856.11

Finding the Fourth Proportional to 7,143.09, 10,718.69 and 3,856.11

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Solution

The fourth proportional to 7,143.09, 10,718.69 and 3,856.11 is: 5,786.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.09 : 10,718.69 = 3,856.11 : x
  2. Step 2: Convert to fraction form
    7,143.09/10,718.69 = 3,856.11/x
  3. Step 3: Cross multiply
    7,143.09x = 10,718.69 × 3,856.11
  4. Step 4: Simplify right side
    7,143.09x = 41,332,464.85
  5. Step 5: Solve for x
    x = 41,332,464.85/7,143.09
  6. Step 6: Final answer
    x = 5,786.35

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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.