Home / 2,072.66-2,860.31-1,128.51

Finding the Fourth Proportional to 2,072.66, 2,860.31 and 1,128.51

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Solution

The fourth proportional to 2,072.66, 2,860.31 and 1,128.51 is: 1,557.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.66 : 2,860.31 = 1,128.51 : x
  2. Step 2: Convert to fraction form
    2,072.66/2,860.31 = 1,128.51/x
  3. Step 3: Cross multiply
    2,072.66x = 2,860.31 × 1,128.51
  4. Step 4: Simplify right side
    2,072.66x = 3,227,891.26
  5. Step 5: Solve for x
    x = 3,227,891.26/2,072.66
  6. Step 6: Final answer
    x = 1,557.37

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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.