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Finding the Fourth Proportional to 1,550.72, 2,140 and 852.12

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Solution

The fourth proportional to 1,550.72, 2,140 and 852.12 is: 1,175.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.72 : 2,140 = 852.12 : x
  2. Step 2: Convert to fraction form
    1,550.72/2,140 = 852.12/x
  3. Step 3: Cross multiply
    1,550.72x = 2,140 × 852.12
  4. Step 4: Simplify right side
    1,550.72x = 1,823,536.80
  5. Step 5: Solve for x
    x = 1,823,536.80/1,550.72
  6. Step 6: Final answer
    x = 1,175.93

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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.