Home / 2,131.32-3,193.14-1,784.28

Finding the Fourth Proportional to 2,131.32, 3,193.14 and 1,784.28

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Solution

The fourth proportional to 2,131.32, 3,193.14 and 1,784.28 is: 2,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.32 : 3,193.14 = 1,784.28 : x
  2. Step 2: Convert to fraction form
    2,131.32/3,193.14 = 1,784.28/x
  3. Step 3: Cross multiply
    2,131.32x = 3,193.14 × 1,784.28
  4. Step 4: Simplify right side
    2,131.32x = 5,697,455.84
  5. Step 5: Solve for x
    x = 5,697,455.84/2,131.32
  6. Step 6: Final answer
    x = 2,673.21

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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.