Home / 2,869.71-3,960.36-1,611.16

Finding the Fourth Proportional to 2,869.71, 3,960.36 and 1,611.16

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Solution

The fourth proportional to 2,869.71, 3,960.36 and 1,611.16 is: 2,223.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.71 : 3,960.36 = 1,611.16 : x
  2. Step 2: Convert to fraction form
    2,869.71/3,960.36 = 1,611.16/x
  3. Step 3: Cross multiply
    2,869.71x = 3,960.36 × 1,611.16
  4. Step 4: Simplify right side
    2,869.71x = 6,380,773.62
  5. Step 5: Solve for x
    x = 6,380,773.62/2,869.71
  6. Step 6: Final answer
    x = 2,223.49

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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.