Home / 3,931.95-5,426.09-2,163.67

Finding the Fourth Proportional to 3,931.95, 5,426.09 and 2,163.67

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Solution

The fourth proportional to 3,931.95, 5,426.09 and 2,163.67 is: 2,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.95 : 5,426.09 = 2,163.67 : x
  2. Step 2: Convert to fraction form
    3,931.95/5,426.09 = 2,163.67/x
  3. Step 3: Cross multiply
    3,931.95x = 5,426.09 × 2,163.67
  4. Step 4: Simplify right side
    3,931.95x = 11,740,268.15
  5. Step 5: Solve for x
    x = 11,740,268.15/3,931.95
  6. Step 6: Final answer
    x = 2,985.86

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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.