Home / 1,577.17-2,174.23-1,128.92

Finding the Fourth Proportional to 1,577.17, 2,174.23 and 1,128.92

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Solution

The fourth proportional to 1,577.17, 2,174.23 and 1,128.92 is: 1,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.17 : 2,174.23 = 1,128.92 : x
  2. Step 2: Convert to fraction form
    1,577.17/2,174.23 = 1,128.92/x
  3. Step 3: Cross multiply
    1,577.17x = 2,174.23 × 1,128.92
  4. Step 4: Simplify right side
    1,577.17x = 2,454,522.27
  5. Step 5: Solve for x
    x = 2,454,522.27/1,577.17
  6. Step 6: Final answer
    x = 1,556.28

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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.