Home / 3,931.92-5,426.13-2,163.65

Finding the Fourth Proportional to 3,931.92, 5,426.13 and 2,163.65

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Solution

The fourth proportional to 3,931.92, 5,426.13 and 2,163.65 is: 2,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.92 : 5,426.13 = 2,163.65 : x
  2. Step 2: Convert to fraction form
    3,931.92/5,426.13 = 2,163.65/x
  3. Step 3: Cross multiply
    3,931.92x = 5,426.13 × 2,163.65
  4. Step 4: Simplify right side
    3,931.92x = 11,740,219.04
  5. Step 5: Solve for x
    x = 11,740,219.04/3,931.92
  6. Step 6: Final answer
    x = 2,985.87

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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.