Home / 1,271.21-1,906.61-1,029.15

Finding the Fourth Proportional to 1,271.21, 1,906.61 and 1,029.15

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Solution

The fourth proportional to 1,271.21, 1,906.61 and 1,029.15 is: 1,543.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.21 : 1,906.61 = 1,029.15 : x
  2. Step 2: Convert to fraction form
    1,271.21/1,906.61 = 1,029.15/x
  3. Step 3: Cross multiply
    1,271.21x = 1,906.61 × 1,029.15
  4. Step 4: Simplify right side
    1,271.21x = 1,962,182.54
  5. Step 5: Solve for x
    x = 1,962,182.54/1,271.21
  6. Step 6: Final answer
    x = 1,543.56

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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.