Home / 1,537.77-2,121.15-1,065.44

Finding the Fourth Proportional to 1,537.77, 2,121.15 and 1,065.44

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Solution

The fourth proportional to 1,537.77, 2,121.15 and 1,065.44 is: 1,469.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,537.77 : 2,121.15 = 1,065.44 : x
  2. Step 2: Convert to fraction form
    1,537.77/2,121.15 = 1,065.44/x
  3. Step 3: Cross multiply
    1,537.77x = 2,121.15 × 1,065.44
  4. Step 4: Simplify right side
    1,537.77x = 2,259,958.06
  5. Step 5: Solve for x
    x = 2,259,958.06/1,537.77
  6. Step 6: Final answer
    x = 1,469.63

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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.