Home / 2,209.95-3,049.80-1,215.27

Finding the Fourth Proportional to 2,209.95, 3,049.80 and 1,215.27

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Solution

The fourth proportional to 2,209.95, 3,049.80 and 1,215.27 is: 1,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.95 : 3,049.80 = 1,215.27 : x
  2. Step 2: Convert to fraction form
    2,209.95/3,049.80 = 1,215.27/x
  3. Step 3: Cross multiply
    2,209.95x = 3,049.80 × 1,215.27
  4. Step 4: Simplify right side
    2,209.95x = 3,706,330.45
  5. Step 5: Solve for x
    x = 3,706,330.45/2,209.95
  6. Step 6: Final answer
    x = 1,677.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.