Home / 2,127.84-3,190.28-1,512.78

Finding the Fourth Proportional to 2,127.84, 3,190.28 and 1,512.78

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Solution

The fourth proportional to 2,127.84, 3,190.28 and 1,512.78 is: 2,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.84 : 3,190.28 = 1,512.78 : x
  2. Step 2: Convert to fraction form
    2,127.84/3,190.28 = 1,512.78/x
  3. Step 3: Cross multiply
    2,127.84x = 3,190.28 × 1,512.78
  4. Step 4: Simplify right side
    2,127.84x = 4,826,184.21
  5. Step 5: Solve for x
    x = 4,826,184.21/2,127.84
  6. Step 6: Final answer
    x = 2,268.11

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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.