Home / 3,611.88-4,990.26-2,871.95

Finding the Fourth Proportional to 3,611.88, 4,990.26 and 2,871.95

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Solution

The fourth proportional to 3,611.88, 4,990.26 and 2,871.95 is: 3,967.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.88 : 4,990.26 = 2,871.95 : x
  2. Step 2: Convert to fraction form
    3,611.88/4,990.26 = 2,871.95/x
  3. Step 3: Cross multiply
    3,611.88x = 4,990.26 × 2,871.95
  4. Step 4: Simplify right side
    3,611.88x = 14,331,752.26
  5. Step 5: Solve for x
    x = 14,331,752.26/3,611.88
  6. Step 6: Final answer
    x = 3,967.95

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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.