Home / 2,087.79-3,132.95-1,212

Finding the Fourth Proportional to 2,087.79, 3,132.95 and 1,212

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Solution

The fourth proportional to 2,087.79, 3,132.95 and 1,212 is: 1,818.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.79 : 3,132.95 = 1,212 : x
  2. Step 2: Convert to fraction form
    2,087.79/3,132.95 = 1,212/x
  3. Step 3: Cross multiply
    2,087.79x = 3,132.95 × 1,212
  4. Step 4: Simplify right side
    2,087.79x = 3,797,129.34
  5. Step 5: Solve for x
    x = 3,797,129.34/2,087.79
  6. Step 6: Final answer
    x = 1,818.73

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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.