Home / 1,271.82-1,756.49-1,134.39

Finding the Fourth Proportional to 1,271.82, 1,756.49 and 1,134.39

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Solution

The fourth proportional to 1,271.82, 1,756.49 and 1,134.39 is: 1,566.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.82 : 1,756.49 = 1,134.39 : x
  2. Step 2: Convert to fraction form
    1,271.82/1,756.49 = 1,134.39/x
  3. Step 3: Cross multiply
    1,271.82x = 1,756.49 × 1,134.39
  4. Step 4: Simplify right side
    1,271.82x = 1,992,539.02
  5. Step 5: Solve for x
    x = 1,992,539.02/1,271.82
  6. Step 6: Final answer
    x = 1,566.68

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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.