Home / 2,137.79-3,202.43-1,405.15

Finding the Fourth Proportional to 2,137.79, 3,202.43 and 1,405.15

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Solution

The fourth proportional to 2,137.79, 3,202.43 and 1,405.15 is: 2,104.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.79 : 3,202.43 = 1,405.15 : x
  2. Step 2: Convert to fraction form
    2,137.79/3,202.43 = 1,405.15/x
  3. Step 3: Cross multiply
    2,137.79x = 3,202.43 × 1,405.15
  4. Step 4: Simplify right side
    2,137.79x = 4,499,894.51
  5. Step 5: Solve for x
    x = 4,499,894.51/2,137.79
  6. Step 6: Final answer
    x = 2,104.93

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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.