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Finding the Fourth Proportional to 2,391.75, 3,587.76 and 852.75

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Solution

The fourth proportional to 2,391.75, 3,587.76 and 852.75 is: 1,279.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.75 : 3,587.76 = 852.75 : x
  2. Step 2: Convert to fraction form
    2,391.75/3,587.76 = 852.75/x
  3. Step 3: Cross multiply
    2,391.75x = 3,587.76 × 852.75
  4. Step 4: Simplify right side
    2,391.75x = 3,059,462.34
  5. Step 5: Solve for x
    x = 3,059,462.34/2,391.75
  6. Step 6: Final answer
    x = 1,279.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.