Home / 3,741.20-5,611.80-1,143.80

Finding the Fourth Proportional to 3,741.20, 5,611.80 and 1,143.80

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Solution

The fourth proportional to 3,741.20, 5,611.80 and 1,143.80 is: 1,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,741.20 : 5,611.80 = 1,143.80 : x
  2. Step 2: Convert to fraction form
    3,741.20/5,611.80 = 1,143.80/x
  3. Step 3: Cross multiply
    3,741.20x = 5,611.80 × 1,143.80
  4. Step 4: Simplify right side
    3,741.20x = 6,418,776.84
  5. Step 5: Solve for x
    x = 6,418,776.84/3,741.20
  6. Step 6: Final answer
    x = 1,715.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.