Home / 3,611.12-5,390.50-3,173.72

Finding the Fourth Proportional to 3,611.12, 5,390.50 and 3,173.72

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Solution

The fourth proportional to 3,611.12, 5,390.50 and 3,173.72 is: 4,737.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.12 : 5,390.50 = 3,173.72 : x
  2. Step 2: Convert to fraction form
    3,611.12/5,390.50 = 3,173.72/x
  3. Step 3: Cross multiply
    3,611.12x = 5,390.50 × 3,173.72
  4. Step 4: Simplify right side
    3,611.12x = 17,107,937.66
  5. Step 5: Solve for x
    x = 17,107,937.66/3,611.12
  6. Step 6: Final answer
    x = 4,737.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.