Home / 1,572.72-2,161.39-1,292.48

Finding the Fourth Proportional to 1,572.72, 2,161.39 and 1,292.48

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Solution

The fourth proportional to 1,572.72, 2,161.39 and 1,292.48 is: 1,776.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.72 : 2,161.39 = 1,292.48 : x
  2. Step 2: Convert to fraction form
    1,572.72/2,161.39 = 1,292.48/x
  3. Step 3: Cross multiply
    1,572.72x = 2,161.39 × 1,292.48
  4. Step 4: Simplify right side
    1,572.72x = 2,793,553.35
  5. Step 5: Solve for x
    x = 2,793,553.35/1,572.72
  6. Step 6: Final answer
    x = 1,776.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.