Home / 2,127.18-3,190.43-1,087.95

Finding the Fourth Proportional to 2,127.18, 3,190.43 and 1,087.95

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Solution

The fourth proportional to 2,127.18, 3,190.43 and 1,087.95 is: 1,631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.18 : 3,190.43 = 1,087.95 : x
  2. Step 2: Convert to fraction form
    2,127.18/3,190.43 = 1,087.95/x
  3. Step 3: Cross multiply
    2,127.18x = 3,190.43 × 1,087.95
  4. Step 4: Simplify right side
    2,127.18x = 3,471,031.04
  5. Step 5: Solve for x
    x = 3,471,031.04/2,127.18
  6. Step 6: Final answer
    x = 1,631.75

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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.