Home / 2,205.63-3,044.79-1,420.11

Finding the Fourth Proportional to 2,205.63, 3,044.79 and 1,420.11

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Solution

The fourth proportional to 2,205.63, 3,044.79 and 1,420.11 is: 1,960.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.63 : 3,044.79 = 1,420.11 : x
  2. Step 2: Convert to fraction form
    2,205.63/3,044.79 = 1,420.11/x
  3. Step 3: Cross multiply
    2,205.63x = 3,044.79 × 1,420.11
  4. Step 4: Simplify right side
    2,205.63x = 4,323,936.73
  5. Step 5: Solve for x
    x = 4,323,936.73/2,205.63
  6. Step 6: Final answer
    x = 1,960.41

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1.5x scale

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.