Home / 1,938.36-2,907.24-1,611.40

Finding the Fourth Proportional to 1,938.36, 2,907.24 and 1,611.40

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Solution

The fourth proportional to 1,938.36, 2,907.24 and 1,611.40 is: 2,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.36 : 2,907.24 = 1,611.40 : x
  2. Step 2: Convert to fraction form
    1,938.36/2,907.24 = 1,611.40/x
  3. Step 3: Cross multiply
    1,938.36x = 2,907.24 × 1,611.40
  4. Step 4: Simplify right side
    1,938.36x = 4,684,726.54
  5. Step 5: Solve for x
    x = 4,684,726.54/1,938.36
  6. Step 6: Final answer
    x = 2,416.85

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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.