Home / 1,611.38-2,217.42-1,557.92

Finding the Fourth Proportional to 1,611.38, 2,217.42 and 1,557.92

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Solution

The fourth proportional to 1,611.38, 2,217.42 and 1,557.92 is: 2,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.38 : 2,217.42 = 1,557.92 : x
  2. Step 2: Convert to fraction form
    1,611.38/2,217.42 = 1,557.92/x
  3. Step 3: Cross multiply
    1,611.38x = 2,217.42 × 1,557.92
  4. Step 4: Simplify right side
    1,611.38x = 3,454,551.88
  5. Step 5: Solve for x
    x = 3,454,551.88/1,611.38
  6. Step 6: Final answer
    x = 2,143.85

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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.