Home / 2,107.64-3,157.40-1,180.40

Finding the Fourth Proportional to 2,107.64, 3,157.40 and 1,180.40

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Solution

The fourth proportional to 2,107.64, 3,157.40 and 1,180.40 is: 1,768.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.64 : 3,157.40 = 1,180.40 : x
  2. Step 2: Convert to fraction form
    2,107.64/3,157.40 = 1,180.40/x
  3. Step 3: Cross multiply
    2,107.64x = 3,157.40 × 1,180.40
  4. Step 4: Simplify right side
    2,107.64x = 3,726,994.96
  5. Step 5: Solve for x
    x = 3,726,994.96/2,107.64
  6. Step 6: Final answer
    x = 1,768.33

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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.