Home / 3,931.95-5,426.15-2,163.63

Finding the Fourth Proportional to 3,931.95, 5,426.15 and 2,163.63

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Solution

The fourth proportional to 3,931.95, 5,426.15 and 2,163.63 is: 2,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.95 : 5,426.15 = 2,163.63 : x
  2. Step 2: Convert to fraction form
    3,931.95/5,426.15 = 2,163.63/x
  3. Step 3: Cross multiply
    3,931.95x = 5,426.15 × 2,163.63
  4. Step 4: Simplify right side
    3,931.95x = 11,740,170.11
  5. Step 5: Solve for x
    x = 11,740,170.11/3,931.95
  6. Step 6: Final answer
    x = 2,985.84

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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.