Home / 2,205-3,042.90-1,273.50

Finding the Fourth Proportional to 2,205, 3,042.90 and 1,273.50

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Solution

The fourth proportional to 2,205, 3,042.90 and 1,273.50 is: 1,757.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205 : 3,042.90 = 1,273.50 : x
  2. Step 2: Convert to fraction form
    2,205/3,042.90 = 1,273.50/x
  3. Step 3: Cross multiply
    2,205x = 3,042.90 × 1,273.50
  4. Step 4: Simplify right side
    2,205x = 3,875,133.15
  5. Step 5: Solve for x
    x = 3,875,133.15/2,205
  6. Step 6: Final answer
    x = 1,757.43

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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.