Home / 1,127.90-1,557.36-1,028.27

Finding the Fourth Proportional to 1,127.90, 1,557.36 and 1,028.27

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Solution

The fourth proportional to 1,127.90, 1,557.36 and 1,028.27 is: 1,419.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.90 : 1,557.36 = 1,028.27 : x
  2. Step 2: Convert to fraction form
    1,127.90/1,557.36 = 1,028.27/x
  3. Step 3: Cross multiply
    1,127.90x = 1,557.36 × 1,028.27
  4. Step 4: Simplify right side
    1,127.90x = 1,601,386.57
  5. Step 5: Solve for x
    x = 1,601,386.57/1,127.90
  6. Step 6: Final answer
    x = 1,419.79

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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.